The Commercial Horizontal Sander is designed for large production work. This sander comes complete with a 1/2hp motor mounted on a rustproof aluminum-topped Lam-I-Cushion base, instructions and product guarantee. The supported back plate gives user a 3" x 13" working space for grinding long flat surfaces. This wet belt sander uses 3" x 41-1/2" sanding belts increasing grinding surface and extending belt life. This model ships with the motor attached, ready to plug in and operate.