Custom Double Thick Wall Boxes: Strength, Cost, and Use

The first time I watched a pallet stack test survive a rough inbound dock, it wasn’t because someone wrapped the carton in miracle tape or packed extra foam like they were cushioning a grandfather clock. It survived because Custom Double Thick Wall boxes did what good packaging should do: hold shape, take abuse, and keep the product inside from paying the price. I still remember standing in a Shenzhen warehouse with a client who thought a fancier print finish would solve a shipping problem. The boxes looked gorgeous. The product still cracked. That was an $18,000 lesson in structure over vanity, and honestly, I still shake my head when I think about it.

If you sell glass, ceramics, electronics, premium candles, or any product that gets stacked, reshipped, or stored before it reaches the customer, custom double thick wall boxes are worth a hard look. They are not just “stronger boxes.” That description is lazy and usually followed by a bad quote. These cartons are built with extra corrugated wall structure, which means better crush resistance, better stacking performance, and fewer complaints from customers who open a damaged order and decide your brand is careless. Fair or not, that’s how package branding works, and it can be maddening when you’ve done everything else right, especially when a damaged parcel can cost $7.50 to $24.00 to replace once you count freight, labor, and re-ship fees.

Custom Double Thick Wall Boxes: What They Are and Why They Matter

Custom double thick wall boxes use two layers of corrugated board in the wall structure instead of a single layer. In practical terms, that means more board, more rigidity, and more protection against compression during shipping and storage. I’ve seen brands call these “heavy-duty mailers,” “Double Wall Cartons,” or “extra-strength custom printed boxes.” Fine. The label matters less than the construction. What matters is whether the box can survive being stacked under 40 pounds of other cartons on a warehouse pallet without folding like a cheap lawn chair, especially when the board spec is something like a 350gsm face sheet laminated to a 48 ECT or 32 ECT corrugated base.

Here’s the plain-English version: a standard single-wall box might be fine for light apparel or flat accessories. Custom double thick wall boxes are for products that need a higher crush rating, better puncture resistance, and less flex when a carrier decides your parcel is just another item in the pile. That includes luxury goods, glassware, cosmetics kits with bottles, small appliances, subscription kits with dense contents, and retail packaging that needs to arrive looking intentional, not beaten up. In a lot of factories around Dongguan and Foshan, I’ll ask for a board sample first because the difference between a lighter single-wall stock and a double-wall build is obvious the moment you press a thumb into the edge.

They are not the same thing as a basic box with thicker print. I’ve had clients send me “double wall” samples that were really just oversized single-wall cartons with fancy graphics. Cute. Not helpful. The difference is in the flute layers and the board grade, not the marketing language. A proper double-wall structure gives the box more backbone, which is why custom double thick wall boxes are common in packaging design for products with higher value or higher failure cost, especially when factories in Shenzhen quote against a BC-flute structure instead of a lighter B-flute build.

Client truth: “We thought stronger tape would fix it. It didn’t. The box was the problem.” I heard that from a wine brand founder after three pallet failures and $9,400 in replacements. The box, not the tape, was the issue, and the replacement cartons were retooled in Yiwu with a heavier corrugated spec the next week.

The tradeoff is simple and annoying. More material usually means a higher unit cost. But if a damaged shipment costs you replacements, refund labor, reshipment freight, and one angry review that keeps selling for six months, the “cheap” box gets expensive fast. Custom double thick wall boxes often save money by reducing damage claims. That’s not theory. I’ve seen it on client spreadsheets. One cosmetics brand cut replacement shipments by 31% after moving from single-wall to custom double thick wall boxes with a tighter fit and a better board spec, dropping the packaging loss rate from 4.8% to 3.3% in 90 days.

In my experience, the best use cases are the ones where the product value is high enough that a $0.20 to $0.60 increase in packaging cost is easy to justify. If your box is protecting a $48 candle set, a $120 skincare bundle, or a $260 electronics kit, a stronger carton is usually a sane choice. If the product is low-value and light, you may be spending money just to feel safer. And feeling safer is not the same as shipping smarter, no matter how much the sales deck wants that to be true. I’ve seen brands in Los Angeles and Nashville pay an extra $0.42 per unit for stronger packaging and save nearly $11,000 in annual damage claims, which is exactly the kind of math that makes operations people exhale.

How Custom Double Thick Wall Boxes Work in Real Shipping

Corrugated board has a simple job: absorb impact, resist compression, and keep the contents from getting crushed or punctured. Custom double thick wall boxes improve that job by adding a second wall layer, which increases stiffness and strength. Think of it like wearing one jacket versus two. You can still move around, but the second layer gives you more structure and better protection against rough handling. On a manufacturing line in Dongguan, that extra stiffness is usually verified with edge crush and compression tests before the cartons are packed flat on a pallet.

The construction usually includes outer liners, fluting, and an inner liner. Different flute profiles, such as B-flute, C-flute, or combinations like BC-flute, change how the box performs under load. That detail matters. A box with the wrong flute profile may look fine on a quote sheet but fail in the real world when it’s stacked six-high in a distribution center or dropped from belt height during parcel handling. I’ve seen that mismatch more than once, and it never ends with a happy call. A BC-flute build can be noticeably stiffer than a single C-flute box, and when the spec is written clearly, the factory in Shenzhen or Xiamen can quote it without guesswork.

Compression strength is a big reason brands choose custom double thick wall boxes. In a warehouse, your cartons may sit under other cartons for days. In transit, they may be stacked with no consideration for your product’s feelings. A double-wall structure helps the box keep its shape under vertical pressure. It also handles edge crush better, which matters when boxes are palletized or handled by people moving fast and not always gently. I’ve walked through facilities where the dock team literally slid cartons across concrete. That’s not an ideal test. It is a real one, and it’s why I’m so picky about board spec, especially for pallets that ship out of Ningbo or Shenzhen with 18 to 24 cartons per layer.

Drop impact is another factor. A stronger wall does not make a box indestructible. That would be marketing nonsense. But it does reduce the chance that a corner collapse transfers straight into the product. For fragile items like glass bottles, ceramics, or electronics, that extra cushioning effect can be the difference between a clean delivery and a replacement request. If you use inserts, dividers, or molded pulp trays inside custom double thick wall boxes, you get even better performance because the product is held in place and the outer carton does its job as a shell. A molded pulp insert from a supplier in Shenzhen may add $0.12 to $0.35 per set, but it often prevents the kind of movement that causes cracked necks and chipped edges.

Design choices change the outcome more than people think. A full-coverage print design may look amazing, but if the artwork wraps across heavy-crease areas, you can get cracking, scuffing, or alignment headaches. Closure style matters too. RSC cartons, die-cut mailers, and tuck-top designs behave differently. I’ve had brands ask for a “stronger” box and then insist on a closure that created weak points on the corners. That is not a packaging strategy. That is a compromise with a prettier font, and it makes me slightly tired just typing it. In one Guangzhou project, a die-cut handle added a clean retail look but reduced top-panel strength enough that we had to redesign the insert to restore compression resistance.

One smart thing about custom double thick wall boxes is dimensional efficiency. If you spec the box correctly around the product, you can reduce void fill, improve pack-out speed, and sometimes even reduce dimensional shipping costs. I once worked with a tea brand that shaved 0.75 inches off each side of their outer carton. That sounds tiny. It cut the average parcel DIM weight enough to save about $0.34 per shipment across 42,000 orders. Do that math. It adds up quickly, which is why I get a little stubborn about measurements. On a 5,000-piece order, even a $0.07 per-unit freight and DIM improvement can save $350 before the season even starts.

For brands wanting better technical reference points, I always tell them to look at industry standards and testing organizations. Packaging performance is often discussed in relation to ISTA transport testing, ASTM material specs, and FSC sourcing where paper content matters. If you want an overview of packaging guidance, the Packaging Association is a decent starting point, and if sustainability claims matter to your brand, FSC guidance at fsc.org is worth reading before you print a claim you can’t back up. In practice, I’ll ask for board mill specs, moisture tolerance, and glue-line details before approving a production run in a factory outside Dongguan.

Key Factors That Affect Performance, Price, and Print

Money tends to show up fast once the spec sheet is real. The biggest cost driver for custom double thick wall boxes is board grade and thickness. If you move from a lighter corrugated spec to a stronger double-wall format, material cost rises fast. After that, size, print coverage, finishes, inserts, and quantity all start nudging the unit price up or down. I’ve seen the same carton quote at $1.08 and $1.94 depending on board choice, print coverage, and order volume. Same basic shape. Very different economics. A factory in Shenzhen might quote $0.15 per unit for 5,000 pieces on a simple one-color build, while a similar premium run with inserts can jump to $1.62 once the dieline, labor, and freight are included.

MOQ matters more than buyers expect. If you’re ordering 1,000 pieces, setup costs, tooling, and print prep get spread across fewer units, so the price per box climbs. At 5,000 pieces, the unit price often gets much friendlier. At 10,000, it gets better again, assuming the design doesn’t require expensive custom dies or multiple print passes. For custom double thick wall boxes, a small run might land around $1.55 to $2.40 per unit depending on size and finish, while a larger run could drop to $0.88 to $1.35. That’s a broad range because packaging is never a vending machine. It depends on dimensions, board grade, and freight, which is exactly why a quick quote can be misleading. A job run in Dongguan with 10,000 units and a standard die often lands 12% to 18% lower than the same spec in a 1,000-piece test order.

Print choices can move the quote more than people think. A one-color logo on kraft board is usually cheaper than full-wrap CMYK print with a soft-touch laminate. Inside print adds another layer of cost. Specialty finishes like matte varnish, embossing, or foil can be beautiful, but they are not free. If your goal is premium presentation, custom printed boxes can absolutely support that. If your goal is to protect glass jars during UPS handling, a giant foil logo is just expensive decoration. I’m not anti-pretty; I just want pretty to earn its keep. On a 350gsm face stock, a matte laminate may add $0.06 to $0.11 per unit, while foil stamping can add $0.10 to $0.25 depending on coverage and plate cost.

Option	Typical Use	Approx. Unit Cost	Notes
Basic double-wall kraft box	Heavy or fragile shipping	$0.88–$1.20	Best for protection, limited branding
Printed double-wall box	Branded product packaging	$1.15–$1.65	Adds logo and color, still practical
Premium finished double-wall box	Retail packaging or gift sets	$1.55–$2.40	Soft-touch, foil, emboss, or inside print
Double-wall box with inserts	Glass, electronics, cosmetics kits	$1.35–$2.80	Depends heavily on insert type and complexity

Size and product weight are where brands get sloppy. Overspecify the box and you waste money on board, freight, and storage. Underspecify it and you’ll pay later in damage claims. Fun trade, right? I once reviewed a subscription electronics kit that used a carton 1.25 inches bigger than necessary in every direction. The team liked the “luxury feel.” The freight invoices hated it. They were paying for air, which is a hilarious way to burn margin. On that program, trimming the outer carton saved $0.28 per shipment and dropped pallet count by two per 1,200 units.

Shipping logistics also matter. Are the boxes shipped flat or assembled? Do you have room to store 2,000 flat cartons, or are you paying for inbound freight and warehousing because your back room is tiny? Are you buying domestically or importing from a factory in Shenzhen or Dongguan? Freight can quietly add a surprising chunk to the landed cost, especially with bulky custom double thick wall boxes. A quote that looks cheap per unit can become mediocre after ocean freight, duty, inland trucking, and pallet handling all show up with their hands out. I’ve seen a carton cost $0.96 in the factory and land at $1.41 after trucking into California and pallet receiving fees.

For companies serious about sustainability claims, EPA guidance around packaging waste and recycling is worth reviewing at epa.gov. I’ve had clients slap “recyclable” on packaging without checking local recovery realities. That kind of shortcut can create brand damage faster than a split seam on a rainy delivery day. If your cartons use FSC-certified paper or recycled liners, ask the supplier for the chain-of-custody paperwork before you print the claim.

If you sell retail packaging as part of the shelf experience, print quality needs to match the price point. A luxury candle in a battered-looking carton sends the wrong message. A premium skincare set in a sloppy box does the same. The best custom double thick wall boxes balance protection and presentation without pretending the box is more important than the product. That balance is packaging design, not wishful thinking with a Pantone book. In a boutique roll-out in Austin, a simple two-color print on a heavy kraft double-wall carton outperformed a glossy over-designed version because it arrived cleaner and cost $0.19 less per unit.

Custom Double Thick Wall Boxes: Step-by-Step Ordering Process and Timeline

The best ordering process starts with a spec sheet, not a mood board. I need product dimensions, weight, fragility level, shipping method, and whether you need inserts, dividers, or a tuck-top style. If the buyer hands me “medium size, premium feel, maybe gold?” I know I’m in for a long week. Custom double thick wall boxes should be designed around the actual product, not around a vague brand feeling. If you can tell me the exact product footprint in millimeters, the carton conversation gets easier in about 30 seconds.

Once the specs are clear, ask for a structural sample. That means a plain sample with the right dimensions and board type, even if the print is not finalized. You want to check fit, closure, stacking behavior, and internal movement before you commit to a full run. I’ve watched clients skip this step and discover the product rattles inside like loose cutlery. That’s not a box problem after shipping. That’s a planning problem before shipping. A sample from a Shenzhen factory usually costs $35 to $90 plus courier fees, which is a bargain compared with a 5,000-piece mistake.

Then comes the artwork and die-line review. This is where mistakes happen in the boring-looking parts. You confirm panel sizes, bleed, fold lines, and where the logo lands on the finished box. If the brand graphic crosses a crease or gets too close to an edge, it may print poorly or wear faster in transit. With custom double thick wall boxes, material thickness changes how the artwork wraps, so the dieline has to match the actual board specification, not some generic file pulled from a shared drive labeled “final_final_use_this_one.” I wish that label was a joke. It isn’t. In production, a 2 mm shift on a corner panel can throw off registration enough to make a premium carton look rushed.

The production flow usually looks like this:

1. Quote request with dimensions, material, quantity, and print details.
2. Prototype or structural sample for fit and strength review.
3. Artwork placement check and die-line approval.
4. Material confirmation and final sign-off.
5. Production run.
6. Quality inspection and packing.
7. Freight booking and shipment.

Typical lead times depend on sample approval, print complexity, and factory schedule. A simple double-wall carton with one-color print may take 12–15 business days after proof approval. If you need inserts, specialty finishes, or a full custom die, the timeline can stretch to 18–25 business days. Rush jobs cost more. That’s not a punishment. It’s the factory telling you your planning is expensive. Freight can add another week or three, depending on whether you ship by air, LCL ocean, or full container. For a run out of Guangdong, I usually tell clients to budget 3 to 5 business days for proof revisions, then the production clock starts.

One of my more memorable factory visits was in a corrugation plant outside Shenzhen where the production manager opened the press room door, pointed at a stack of custom double thick wall boxes, and said, “This quote is only honest if the buyer understands pallet size.” He was right. I’d seen too many brands quote the carton and ignore the pallet count. If your boxes are bulky, pallet density becomes part of the cost structure. Ten cents saved on board means nothing if your pallet count jumps from 8 to 11. In that plant, a carton designed 15 mm smaller on height saved almost a full pallet per 2,400 units.

Here’s the part people hate hearing: sample approval saves money. Every time. I had a personal care client insist they “knew what they wanted” and skip the sample stage to save two weeks. They ended up with Box Inserts That pinched the bottles by 2 mm, which caused 4% of the shipment to arrive with cracked necks. The correction cost them $6,300 and three angry retailer calls. Two weeks saved. Six grand lost. Great trade. That correction happened in a factory near Dongguan, and the revised insert tooling took another 4 business days before production could resume.

Common Mistakes When Ordering Custom Double Thick Wall Boxes

The biggest mistake is buying on appearance alone. A nice render does not tell you whether custom double thick wall boxes will survive a drop test, a warehouse stack, or a carrier who tosses parcels with the emotional range of a parking lot gate. I get why buyers do it. The mockup looks polished. The board spec looks boring. Still, protection wins, and the warehouse does not care how beautiful your PDF is. I’ve seen one brand in Miami approve a carton with gorgeous spot UV and then discover the double-wall spec was still too light for a 14 lb filled weight.

Another common error is ignoring the internal fit. If you leave too much void space, you end up stuffing in extra paper, foam, or air pillows, which increases cost and makes unpacking feel sloppy. If the product slides around, your outer box is doing half the work and losing. I’ve seen a $3.50 luxury accessory kit packed in a box that sounded like marbles in a coffee tin. Not a good sound for branded packaging. Not great for confidence either. Even a 2 mm tighter insert can reduce movement enough to prevent corner rub and lid scuffing.

Skipping sample testing is another classic. People assume a box that looks strong on screen will be strong in transit. Wrong. You need actual filled units and real handling conditions. Test the carton with the product inside, stack three or four units high, and do a simple drop test if you can. For more formal validation, some brands use ISTA protocols, which are designed to simulate shipping stress. If you want to read the standards context, ISTA is at ista.org. No, your cousin’s “it seems fine” is not a test method, even if he says it with confidence. A real validation run in a warehouse near Los Angeles can catch an issue before 8,000 cartons are already on the water.

People also forget shipping realities like palletization and warehouse stacking. A box that performs fine on a bench can fail when stacked under load for two days. This matters a lot with custom double thick wall boxes because their performance benefit is strongest when the carton is spec’d correctly for the actual logistics chain. If you sell wholesale into stores, the boxes may be handled more than once before the customer sees them. That extra handling is where weak specs show up, usually in a very annoying email with photos attached. A pallet built in Dongguan with 12 layers and no corner boards is asking for trouble.

Print constraints trip up brands too. Artwork that wraps around corners, crosses scored lines, or sits too close to a crease can crack or look uneven after folding. That’s especially annoying on custom printed boxes with premium finishes. A soft-touch laminate on a bad dieline just becomes an expensive way to highlight mistakes. If your packaging design is built around a strong visual identity, give the print team room to work. Otherwise you’ll spend $2,500 arguing about a logo that sits 3 mm too far left. I’ve seen that meeting. I never want to attend it again. On one job in Foshan, we moved the logo 5 mm down and solved a folding conflict that had already cost two rounds of revisions.

Finally, many buyers underestimate how important supplier communication is. If a factory answers every question with “no problem” but never explains the board grade, flute choice, or tolerance range, that is not confidence. That is vague optimism. I prefer suppliers who can tell me exactly why they recommend a BC-flute over a C-flute, what the price impact is, and whether the carton will still pass under load after adding a die-cut handle. Honest numbers beat pretty promises every single time. A good factory in Shenzhen should be able to tell you whether the glue line is 3 mm or 5 mm and how that affects assembly speed.

Expert Tips for Better Specs, Better Pricing, and Fewer Headaches

Start with the smallest box that safely fits the product. I’ve watched brands save thousands a year just by trimming half an inch off the dimensions of custom double thick wall boxes. That doesn’t sound dramatic until you multiply it across 20,000 shipments, stack height, and freight pricing. Small changes in outer dimensions can affect DIM weight, pallet count, and storage efficiency. Packaging buyers love big savings stories, but half-inch savings are usually where the real money lives. I once saw a California brand save $0.31 per parcel by tightening the carton height from 9.25 inches to 8.75 inches.

Ask suppliers for multiple board options. A good factory should be able to show you at least two or three constructions with different price points. For example, one spec might be a lighter double-wall board for moderate protection, while another uses a heavier board with better edge crush resistance. You’re not just buying a box. You’re choosing a balance between protection and cost. That’s the whole point of custom packaging products, not just making the carton look busy. In practice, I like to compare a 32 ECT option, a 44 ECT option, and one fully printed build so the buyer can see the tradeoffs in black and white.

Test filled units. Not empty samples. An empty box can fool you because it seems rigid in your hands, then collapses once the product and inserts are added. I learned that the hard way during a factory visit in 2019, when a client’s ceramic set passed the “shake test” empty and failed spectacularly once the bowls were actually inside. The product shifted, corner pressure spiked, and two samples cracked. One filled test would have caught it immediately. Instead we spent another $780 on revised inserts and another week on sampling. I was not thrilled, and neither was the client. That test happened in a warehouse outside Xiamen, and it would have saved everyone time if we had simply packed the real product first.

If your product is premium, don’t cheap out on print quality. Clean branding makes a strong box feel more expensive. That doesn’t mean loading the carton with foil and gloss like it’s trying to win a costume contest. It means crisp logo registration, accurate color matching, and materials that hold up under transit. Good package branding feels considered. Bad package branding feels like someone chose the loudest option available. On a recent job using 350gsm face stock for the outer print layer, the color stayed much cleaner than a thinner stock would have.

Work with suppliers who can explain the tradeoffs clearly. I’d rather hear “this version costs $0.14 more per unit because the board is stronger and the pallet count changes” than get a quote that looks low and hides the expensive parts in freight or revisions. The best suppliers can tell you how the box performs under compression, what the MOQ does to price, and whether a different closure saves money without hurting protection. If they can’t answer those questions, keep shopping. There are plenty of factories. There are fewer good ones. A solid packaging partner in Dongguan or Shenzhen should be able to explain why a better glue line or thicker liner adds cost and value at the same time.

Here’s a simple checklist I use with brands ordering custom double thick wall boxes:

• Product dimensions measured to the nearest 1 mm.
• Exact product weight, including inserts and packing materials.
• Shipping method: parcel, LTL, wholesale, or mixed.
• Preferred board grade and flute type.
• Print method, color count, and finish.
• Target quantity and acceptable MOQ.
• Need for inserts, dividers, or internal supports.
• Warehouse storage limits and pallet constraints.

If you’re buying through Custom Packaging Products, use that checklist before you request a quote. It saves time, cuts back-and-forth, and keeps the first sample from being a guess dressed up as an answer. I’ve negotiated enough packaging deals to tell you that the fastest way to overspend is to ask for “something strong and nice-looking” without real specs. For a 5,000-piece order, a proper brief can shave a week off back-and-forth and prevent a $0.09 per unit correction later.

One more thing: don’t ignore the unglamorous details. Closure style, glue line quality, pallet wrap, and carton orientation can all affect performance. I once saw a brand blame the box for damage when the real issue was a warehouse team loading cartons sideways because the print faces weren’t labeled clearly. That mistake cost them $2,100 in replacements before they changed the carton orientation marks. Sometimes the fix is not a stronger box. Sometimes it’s a smarter box. A simple arrow printed in 1-color black ink would have saved the whole run.

Next Steps for Choosing Custom Double Thick Wall Boxes

Before you ask for pricing, build a simple spec sheet. Include product dimensions, weight, fragility level, shipping method, branding goals, and whether you need inserts or dividers. That one page can save you from six email rounds and a quote that makes no sense. Custom double thick wall boxes are easiest to buy when the buyer knows what the product actually needs, not just what looks good in a mockup. If you can share a sample unit, even better, because a physical reference from your warehouse in Atlanta or Irvine tells the factory more than a paragraph ever will.

Compare at least two or three structural options. Maybe one is a stronger BC-flute, another is a more economical double-wall board, and a third includes a better print surface for retail packaging. You’ll make better decisions when you can see the protection-versus-price tradeoff clearly. I’ve seen brands get trapped by a single quote and assume it was the market rate. Usually, it was just the only option they asked for. In many cases, a revised spec can reduce cost by 8% to 14% without changing the product footprint at all.

Request a sample or mockup and test it with real products under real packing conditions. Stack it, shake it, drop it if needed, and see whether the inside movement is acceptable. If the carton is for direct-to-consumer shipping, test it with the same void fill, tape, and insert configuration your team will use every day. A box can look perfect and still be annoying to pack 500 times. Your warehouse team will tell you the truth faster than any sales rep will, and they usually do it with a sigh. A 15-minute packout test with five real units is usually enough to spot issues before production starts.

Review landed cost, not just unit price. Freight, storage, damage risk, and rework all belong in the calculation. A $0.10 cheaper carton is not a bargain if it increases your replacement rate by 3%. That’s just a more complicated way to lose money. I’ve sat through enough supplier negotiations to know that smart buyers ask, “What does this cost delivered, packed, and stored?” not just “What’s the box price?” For imported cartons from Shenzhen, I always include ocean freight, customs clearance, and inland delivery before I call the number real.

Before you approve production, confirm artwork placement, material grade, closure style, and the exact delivery timeline. If your launch date depends on a retailer receiving boxes by a certain week, plan for one buffer week because shipments do not care about your calendar. The best custom double thick wall boxes protect the product, support the brand, and keep operations sane. That’s the whole job, even if the process occasionally feels like wrestling a spreadsheet in a wind tunnel. A clear proof approval on Tuesday can mean cartons arrive 12–15 business days later, which is the sort of timeline that rewards buyers who plan ahead.

If you’re choosing custom double thick wall boxes for a premium product line, don’t overthink the glossy stuff first. Start with strength, size, and shipping reality. Then add branding. That order saves money, reduces damage, and gives you packaging that does its job without drama. A well-built carton from a factory in Dongguan or Shenzhen, using the right flute and a sensible print spec, usually beats a prettier box that can’t survive the dock.