Wooster, big Ben, 21″, paint tray, large roll off area for 18″ frames, 1 gallon working capacity saves time, designed with added stiffness to allow the roller cover to be loaded with paint more evenly, handy edge compartments hold brushes & tools, polypropylene resists solvents & paint buildup, 16″ l x 21″ w x 4″, d.