EcoBox 36" x 5" x 48" Single Wall Picture/Mirror Box (E1916) Heavy-duty 275# test single wall box. Protect expensive Artwork, paintings, mirrors and even tabletops Great for moving and storage Ship flat and folded to avoid oversize shipping charge Made with up to 60% recycled paper pulps made in the USA Pallet quantity : 140 Heavy-duty 275# Test single wall box. ^Protect expensive artwork, paintings, mirrors and even tabletops. ^Great for moving and storage. ^Ship flat and folded to avoid oversize shipping charge. ^Made with up to 60% recycled paper pulps. Made in the USA.