Art Alternatives Wood Panel Super Value Packs are perfect for all types of painting. The hand-sanded birch wood surface is superbly smooth, and the 3/4" and 1.5" deep panels have s sturdy pine cradle that allows hanging without a frame. Great for encaustic, mixed media, palette knife work and thick applications of paint. The uncradled flat panels have 5mm MDF cores, the Studio panels have a 3/4 inch deep profile and Gallery panels have a 1.5 inch deep profile. Each pack contains a varying number of panels depending on the specific size and depth of the panels.