Tremendously useful for painting all those large areas in a short amount of time. At 21 in. wide, the Big Ben Tray is perfect for use with 12 in., 14 in. or 18 in. roller covers. 1 gal. working capacity saves time by cutting down on refills. Handy compartments on the edge of the tray hold brushes and other tools, keeping them neatly off the floor.