Combo packs provide you with a variety of packing boxes. #1 Moving Box Combo consists of: 5 - 161212DPB 16 x 12 x 12" Deluxe Packing Boxes (1.5 cubic foot capacity). 5 - 181816DPB 18 x 18 x 16" Deluxe Packing Boxes (3.0 cubic foot capacity). 5 - 181824DPB 18 x 18 x 24" Deluxe Packing Boxes (4.5 cubic foot capacity). Special "flap tabs" hold flaps down and out of the way to make packing easier. Manufactured from ECT-32 corrugaged. Boxes are printed with fragile warning and this side up arrows and feature a convenient write on destination panel for deliver to instructions. Shipped flat as a set.