Made From 4 Ply Mat Board White Acid Free Heavier than Vinyl Sizes Included: 16x20, 11x14 and 8x10 Stencils are rectangles with shapes cut out of the middle. These are stencils cut from 4 ply mat board which makes them heavier than normal stencils. Available in the outer dimensions listed below. Each opening is sized on the stencil to leave a border for overpainting. Custom sizing is available upon request Sizes: 16x20, 11x14 and 8x10