These UBMOVE 3 Picture & Mirror Moving Boxes are designed to safely transport and store large pictures and mirrors up to 40x60 inches. The set includes 12 pieces with 3 boxes that can each accommodate a single large item. The boxes feature a single-wall construction and a 4-inch depth providing ample protection for your fragile artwork or mirrors. Easily secure the items in place by folding the cardboard flaps over and securing them with tape. These moving boxes are perfect for relocating or storing your valuable pictures and mirrors ensuring they arrive at your new home or storage facility in pristine condition.