The Packaging Wholesalers 3 Cubic Feet 18-1/8 x 18 x 16 Inches Medium Moving Box with 32 ECT Room Locator Check-Off Box (BS181816MMB),20 Pack Sizes to accommodate the most common household items. Special Skip Slot Tabs hold flaps down and out of the way to make packing easier. Manufactured from 200#/32ECT Kraft Corrugated. Moving Boxes ship flat to save space.