The Full Sheet Watercolorbaord is a high quality precision device designed to tightly stretch a full sheet (approximately 22-inch by 30-inch) of 140-pound - 300-pound watercolor paper. As the screws on the frame of the board are tightened, tension is placed on the outside edges of the paper. After the paper has dried, the paper will stay flat and buckle-free during wet washes. For tabletop use or attach to a camera tripod with the universal tripod mount (included). Carrying handle. Extruded aluminum and hardboard.