Features superior quality, medium textured, duck canvas. Canvas is double-primed with acid-free acrylic gesso for use with oil or acrylic painting. It is stapled onto the back of standard stretcher bars (11/16" x 1-9/16"). Paint on all four edges and hang it with or without a frame. Sizes 24" x 36" and larger include single or double bracing for adding support and sizes 30" x 30" and larger include corner bracing. Unprimed weight: 7oz.; primed weight: 12oz.