EcoBox 36 x 5 x 46-44 Inches Variable Depth Double Wall Picture/Mirror Corrugated Box (E393) One Quantity of Heavy duty 275 lb. double wall box Great for moving or shipping delicate artwork and mirrors FOL (Full-Overlap) flaps provide extra protection on top and bottom Variable depth allows for flexibility in height from 44"-46" Ship flat and folded to avoid oversize shipping charge Heavy duty 275 lb. double wall box. ^Great for moving or shipping delicate artwork and mirrors. ^FOL (Full-Overlap) flaps provide extra protection on top and bottom. ^Variable depth allows for flexibility in height from 44"-46". ^Ship flat and folded to avoid oversize shipping charge.