Heavy-Duty Two-Wall Fiberboard Boxes Built to ASTM D5118 for Demanding Loads
Military Packaging supplies double-wall mil-spec corrugated boxes built to carry heavier, higher-value defense hardware than single-wall can handle. Two layers of fluting give these cartons the stacking strength, crush resistance, and durability that demanding shipments and long storage require. We fabricate them to ASTM D5118 in standard and weather-resistant grades, sized to your equipment. Order double-wall boxes on their own or built into a complete, compliant packaging system we design around your load.
Double-wall corrugated boxes are built from two layers of fluted medium sandwiched between three liners, rather than the single flute layer of an ordinary box. That extra wall gives the carton significantly more strength, rigidity, and resistance to crushing and puncture.
We supply double-wall boxes as the heavy-duty workhorse of fiberboard packaging. When a load is too heavy, too valuable, or too rough-handled for single-wall, double-wall carries it without moving up to a wood crate.
Built to ASTM D5118 and available in weather-resistant grades, our double-wall cartons meet the fabrication and durability requirements defense programs specify. That means a stronger box you can ship on with confidence.
Every double-wall box we supply is built to protect heavier, more demanding shipments:
The second wall changes what a fiberboard box can do:
Corrugated comes in single, double, and triple-wall construction, and each steps up in strength. Single-wall handles the majority of standard shipping. Double-wall adds a second flute layer for heavier loads, stacking, and rougher handling. Triple-wall, the strongest, carries very heavy items and can replace a wood crate.
Double-wall sits in the sweet spot for heavy fiberboard shipments: much stronger than single-wall, lighter and more economical than triple-wall or wood. When your load has outgrown a standard box but does not need a crate, double-wall is usually the answer. Tell us the weight and we will confirm.
Double-wall boxes carry the heavier shipments across a defense program:
Double-wall corrugated protects the heavier shipments these sectors send and store every day:
A few factors point you to double-wall board and the right grade. Weigh these, or send us the load and we will recommend one:
A double-wall box is the strong outer shell for a heavy shipment. It carries the load, resists the crush of stacking, and gives the supply chain a marked, inspection-ready container. The inner packaging that protects the contents builds inward from the box.
Sourced as one system, the box is matched to the foam, bags, and blocking inside it and the weight it carries, so a heavy part stays cushioned and secure inside a carton strong enough to hold it.
Strength in corrugated comes from the flutes, the arched ridges that resist compression. A double-wall box has two flute layers working together, so it carries more stacking weight and resists crushing far better than a single-wall box of the same footprint.
The two walls also spread impact and resist puncture, so a heavy or sharp-edged part inside is less likely to burst through or crush the carton. That combined strength is what lets fiberboard handle loads that would flatten an ordinary box.
Double-wall board pairs two flute profiles to balance cushioning and rigidity, and the common combination joins a larger flute for stacking strength with a smaller flute for a firm, printable surface. The pairing sets how the box performs under load.
We specify board by its strength, using ratings such as the edge crush test to match the carton to your stacking and handling. Share your weight and stack height, and we will select the grade that holds up without over-building the box.
Double-wall does not have to mean domestic-only. We supply weather-resistant double-wall boxes that combine the strength of two walls with water-resistant adhesives and treated liners, built to ASTM D5118 in grades such as V3c and W5c.
That combination suits heavy shipments bound for humid, marine, or outdoor conditions and long storage. When your load is both heavy and exposed, tell us the destination and we will build the weather-resistant double-wall grade to match.
Matching board to a heavy load is what we do. Our team helps buyers and packaging engineers select the double-wall grade, size the box, and meet the spec that governs the shipment.
Send us the contents, the weight, the stack, and any spec callouts, and we will recommend the right double-wall box and quote it, so your heavy shipment ships strong and compliant from the first carton.
Every program specifies its boxes a little differently, and we build to yours. When your documentation names a board strength, a grade, or a construction, we match it exactly. When the choice is open, we recommend the double-wall grade that fits the load and the conditions.
That flexibility means your packaging satisfies the spec and protects the shipment in practice, with no gap between the two.
A double-wall box does its best work as part of a full system. We supply the foam that cushions the part, the barrier bags and desiccants that seal moisture out, the blocking and bracing that fix the load, and the tape and marking that close and identify the carton, all matched to the box. Sourced together, every layer works with the strong box around it.
We build double-wall boxes to ASTM D5118 and the standards that go with it, from MIL-STD-129 marking to the closure practice of ASTM D1974 and the preservation requirements of MIL-STD-2073-1. Each standard governs part of the package, and we build to all of them together.
Where your drawing calls out a grade, board strength, or construction, we match it. Where it leaves a choice, we recommend the double-wall box that protects the shipment and passes inspection. Either way, you get a carton you can ship on.
Tell us what you are shipping, how much it weighs, how it stacks, where it is headed, and any spec callouts, and we will recommend the right double-wall grade and size.
We supply double-wall boxes on their own or as part of a complete packaging system, with availability and turnaround confirmed in your quote.
We match double-wall board to your load instead of overselling triple-wall or a crate, and we know how to build it into a compliant system around your equipment.
When your heavy material has to arrive intact and inspection-ready, our double-wall boxes give it the strength it needs at the weight and cost that make sense.
A double-wall corrugated box is built from two layers of fluting between three liners, rather than the single flute layer of an ordinary box. The second wall adds stacking strength, crush resistance, and durability for heavier, more demanding shipments.
Choose double-wall when the load is heavier, denser, or rougher-handled than single-wall can handle, or when it needs to stack in storage or survive long export transit. We help you match the construction to the weight and conditions.
It depends on the board grade and box size. Double-wall covers a wide range of heavier loads, and we specify the grade by its strength, using ratings such as the edge crush test. Share your weight and we will confirm the right grade.
Yes. We supply weather-resistant double-wall boxes built to ASTM D5118 in grades such as V3c and W5c, combining the strength of two walls with water-resistant adhesives and treated liners for humid and outdoor conditions.
Sometimes. Double-wall handles many heavy loads at less weight and cost than a crate, while triple-wall goes further. For the heaviest or highest-value hardware, we compare double-wall, triple-wall, and a crate and recommend the right one.
Yes. We fabricate them to ASTM D5118 and support compliant MIL-STD-129 marking, so they satisfy the fiberboard and labeling requirements defense and aerospace programs call out. Send us your callout and we will confirm the grade.
Tell us what you are shipping, how much it weighs, and any spec callouts, and we will recommend the right double-wall box, then get you a quote.
