Ampersand Claybord Smooth Cradled museum quality panel is coated with a smooth absorbent clay ground comparable to the clay gesso grounds used during the Renaissance. Archival, lightfast, and acid free, the panels are ideal for acrylics, gouache, tempera, egg tempera, pen and inks as well as for mixed media techniques, airbrush, and collage. Size: 36''x48'' 2''Deep.