A hobbycraft online exclusivebox canvas 36 x 24 inches 2 pack bundle rrp 29 save 1this box canvas will be the perfect base for your masterful artwork this heavyweight canvas has a thickness of 400 gsm making it 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 is acid free and has a medium grain due to its shape the sides of these box canvases are wide enough to paint the