Birch Wood Panels, 1-5/8 deep are constructed with a Baltic Birch face and a smooth solid Poplar cradle (frame around the back).
U.S. Art Supply 8 x 10 Birch Wood Paint Pouring
American Easel AE0404D 4 x 4 inch Craft Panel
Gessobord Painting Panels, Mini Packs - FLAX art & design
Art Alternatives Classic Cotton Stretched Canvas, Gallery - 1-3/8
1.5 Deep Cradled Panel, Made with high quality Birch
FLAX Art Supply Stores - San Francisco and Oakland
Surfaces — Soho Art Materials
These Round Wood Panels are constructed with a 1/8 Baltic Birch wood face with a smooth Ranger Board MDF cradle (frame around the back). Cradled back
Round Wood Panels
U.S. Art Supply 8 x 8 Birch Wood Paint Pouring Panel