Hardboard panel offers a rigid and smooth painting surface which allows artists to produce fine details. Untempered so paints will adhere completely. Or, prime with gesso for oils or acrylics, or add gel and impasto mediums to build a unique surface. Can also be used as mixing palette or drawing board. Great for stretching and taping watercolor paper. 1/8" thick. 24x30". 15 panels per package.