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 (0.69 x 1.56). * Paint on all four edges and hang it with or without a frame. * All sizes larger than 24 x 36 include single or double bracing for adding support and all sizes larger