MABEF Canvas Edge Accessory M6/M18: Paint on all four sides of staple-free canvas! These Canvas Edge Accessories attach to several popular MABEF easels. They slip into the back of splined stretched canvas (up to 82" high and 2-3/4" deep), holding it securely from within and allowing access to all paintable edges. For use with the MBM06D and MBM18D Studio Easels.