A hobbycraft online exclusivebox canvas 20 x 20 cm 6 pack bundle rrp 24 save 6this box canvas will be the perfect base for your masterful artwork this canvas is ideal for use with oil and acrylic paints the canvas is back stapled to a sturdy wooden frame that comes complete with corner wedges for additional supportthe canvas uses 100 unbleached cotton is acid free and has a medium grain due to its shape the sides of these box canvases are wide enough to paint the edges allowing you t