These panels are lightweight and can fit in frames with shallow rabbets. They do not puncture and are therefore sturdy in transit.
MEEDEN 149PCS Art Supplies with French Easel, India
1-1/2 Inch Gallery Depth Panels: Each package includes 2 packs of wood panels, size of 16 x 20, 1-1/2 deep gallery depth cradled birch wood paint
MEEDEN 16x20 Inch Wood Canvas Panels, Pack of 2, Gallery 1-1/2'' Deep Cradle Artist Birch Wood Panels for Pouring Art, Crafts Painting, Mixed-Media
16x20 DIY Paint By Number Canvas Kit Daisy Flowers Pintura Por Números Flores
1/8'' Thick birch board is joined to the 5/8'' depth cradle with a strong adhesive, eliminating the need for staples, nails that would mar the smooth,
Unfinished Birch Wood Canvas Panels Kit, Falling in Art 2 Pack of 16x20'' Studio 3/4'' Deep Cradle Boards for Pouring Art, Crafts, Painting, and More
Canvas Boards and Panels
16x20 Art Board at Jerry's Artarama
Joe's Prime 2 Profile Cradled Painting Panel - 48 x 72, 2 Pack
Art Canvas Blank - Temu
16x20 Art Board at Jerry's Artarama
12 X 16 Board at Jerry's Artarama
Painting Panels – RAYMAR
These panels are lightweight and can fit in frames with shallow rabbets. They do not puncture and are therefore sturdy in transit.
Pintura Painting Canvas 12x24 Wood Panels, Pack of 2
12 X 16 Board at Jerry's Artarama