4 x 4 x 20 Corrugated Boxes 25/Bundle

These brown corrugated boxes are standard test RSC (Regular Slotted Carton) and meet Federal Mil Spec PPP B 636. They're shipped flat, making them easy to store and convenient to ship. The sizes given are the inside dimensions, listed as Length, Width, and Height.

To use these corrugated boxes, first unfold them from their flat - shipped state. Then, simply place your items inside, making sure to use the given inside dimensions as a guide for what can fit. When packing fragile items, add some cushioning like bubble wrap. For shipping, seal the box well with strong packing tape. As for storage, keep them in a dry place to prevent the corrugated material from getting wet and losing its strength. If the boxes get dirty, you can gently wipe them down with a dry cloth.