18 x 18 x 18 Heavy Duty Boxes 20/Bundle

These heavy duty RSC (Regular Slotted Carton) brown corrugated boxes are a great choice. They come flat for easy storage and shipping. The inside dimensions are 18 inches in length, width, and height, ensuring plenty of space for your items.

These heavy - duty boxes are super easy to use. First, unfold the box from its flat state. Make sure to align the flaps properly. Then, place your items inside. You can use packing tape to seal the top and bottom flaps securely. When storing these boxes, keep them in a dry place away from direct sunlight. If you get the boxes dirty, you can simply wipe them down with a dry cloth. Avoid getting them wet as it can weaken the corrugated structure. These boxes are meant for general shipping and storage, so don't use them for extremely heavy or sharp - edged items that could tear through the material.