Mil-Spec Packaging maintains a large inventory of stock sheet grades, from 200 lb. single wall thru 1100 lb. triple wall.

Most sheet plants depend on third party suppliers who may not have this material available. We also have many of the military/weatherized grade materials (W5C, V3C, V11C V13C, Triple Wall) to choose from should you have those requirements. In addition to custom corrugated boxes, we also produce die-cut folded cartons, telescoping style boxes, and various types of partitions (Box Styles, sending box styles images).


Custom Printed Corrugated BoxesCustom Corrugated Packaging

We have experienced designers in interior and interior engineered custom corrugated packaging and containers for your particular product. We excel in specialty packaging and offer military spec boxes and custom corrugated packaging supplies for short runs and sample work as needed.

  • A wide array of graphics from plain to multi-colored to label.
  • Flutes: A, B, C, E, S, Micro-flutes, Double Wall (AB, SC, CB) and Triple Wall
  • Our custom corrugated cardboard and box manufacturers have the capabilities to run everything from the smallest corrugated carton to the largest Gaylords / Bin cartons.

Large custom corrugated shipping box manufacturing can be a complicated and in-depth process. It involves matching up the right corrugated manufacturer to the right customer project. There are also many different types of large corrugated box styles including regular slotted containers (RSC), half slotted containers (HSC), rolled end tuck tops (RETT), rolled end tuck tops with dust flaps and cherry locks (RETTDFCL), and many, many more. The fluting of the corrugated box also helps in determining how much strength you will need in your box. The most commonly used corrugated fluting is C Flute for shipping boxes, E flute for litho laminating, and B flute for trays.

You can also print on custom corrugated packaging and boxes. Either a direct print, litho label, or laminating the litho right to the fluting (also called single-face laminating). A basic corrugated box is a single wall box. Single wall boxes consist of two liners and one medium. The medium is the “fluting” of the box. By increasing the thickness or doubling the quantity of the liners, a custom corrugated shipping box will have greater strength.

Military Specifications

Triple Wall Corrugated Cardboard Containers / Fiberboard Containers
Single Wall and Double Wall Corrugated Containers / Fiberboard Containers
Fast Packs

In addition to our standard product line and military spec boxes, Mil-Spec Packaging offers custom printed corrugated boxes, featuring your company’s logo, package content information, or any other graphic, small or large, up to 60 in. (1524 mm) in diameter. We accept your image file in any major computer file format including JPEG and GIF, provide color-matching service, and print your materials using one or two colors on our flexographic press. Multi-color jobs must meet minimum quantity requirements.

Our secondary services in support of our custom corrugated box manufacturing, making, and printing include design, assembly, die cutting, label printing, laminating, and packaging. We serve clients in industries from pharmaceutical and medical, to military and defense, as well as agricultural, construction, and chemical customers. With lead times as short as two days, we’re able to offer rush services, and also have a J.I.T. delivery option for customers who desire that schedule. We accept orders from low volumes to long production runs, so contact Mil-Spec Packaging to discuss your custom corrugated box and packaging solution.

Most corrugated fiberboard is made from cellulose fiber or trees that are used for wood. However, at Peek Packaging, the majority of our corrugated boxes are made from 100% post-industrial wood by-products. Once upon a time, these by-products were merely burned as waste. We are now able to convert these wood chips into a 100% post-industrial recycled box. This gives our custom corrugated shipping boxes the rigidness and integrity of boxes made from virgin fibers and the green packaging effect we are all looking for to keep our planet and forest healthy and sustainable. To learn more about our custom corrugated boxes, request a quote today.

RSC (Regular Slotted Carton)

The corrugated carton is one the most common shipping boxes on the market. They are easily assembled, the flaps can be taped shut. For strength and durability, corrugated cartons can be made into many different types of flutes and wall construction (or thickness) combinations.

CSSC (Center Special Slotted Container)

This is a very strong box due to the fact that all flaps meet at the center creating a double layer of the thickness of the corrugated board.

FOL (Full OverLap)

The flaps on this box extend from one side to the other, making it an excellent box for heavy objects or rough handling.

DST (Design Style Tray)

A design style tray is a corrugated tray useful for tops and bottoms of pallets and can be used as a display tray. It used for the following industries and applications: shipping supplies, agricultural packaging, food packaging, produce packaging, and retail displays.

HSC (Half Slotted Carton)

The bottom of this corrugated carton is the same as a RSC box but with no top flaps. These boxes can be provided with a lid for a top cover. Typical applications include: part bins, file folder boxes, storage boxes etc.

RETT (Roll End Tuck Top)

Simple unglued box that needs to be folded when assembled. The sides are 3 layers of corrugated for added strength and the top opens and closes with a tuck to the inside of the box. You can also add dust flaps and cherry locks for added stability.

Five Panel Folder

A five panel folder is an unglued corrugated box useful for packaging large items and oddly shaped items and is used in furniture packaging, window packaging, and picture frame packaging.

RTE (Reverse Tuck End)

Same as a STE but the ends tuck and lock on opposite panels

STE (Sameside Tuck End)

Common box glued with each end folding and locking on the same side. The STE can give you a better graphic presentation if the tucks are on the back of the box. A fifth panel can be added for hanging on pegs and giving additional space for graphics.

TTABTM (Tucktop Auto Bottom)

Designed for quick set up, the box is pre-glued on the bottom. This allows the box to be loaded with product without additional folding or taping. The top of the box is then closed by tucking in the top. The top can have an additional locking tab called a catalog lock or locking tab. Club stores normally like a security label for additional protection. This custom corrugated box can also have a cut-out in the front panel to show product inside.

TTSNLBTM (Tucktop Snap Lock Bottom)

Same as a tuck top bottom but the bottom is not pre glued. It has four flaps that are folded and locked to form the bottom. Stronger bottom vs. the auto bottom, less expensive to manufacture but longer set up.