Because Gallerywrap Stretched Canvases are stapled on the back rather than on the edges, you can paint all four sides and hang them with or without a picture frame. Every Gallerywrap canvas is made from acid free, medium weight cotton duck with a medium texture – not too rough and not too smooth. Gallerywrap Stretched Canvases are double primed and provide an excellent support for both oil and acrylic paints. They are mounted on heavy duty, gallery style stretcher frames and are 1 12 in. deep. Sizes that include cross bracing 24 in. x 48 in., 30 in. x 40 in., 36 in. x 48 in., 36 in. x 60 in., and 48 in. x 60 in. Sizes that include double bracing 48 in. x 48 in.