The Truth Hardware 9-1/2 in. Single-Arm Left-Hand Casement Operator allows you to easily open windows up to 90-degrees. The operator can be quickly disconnected from the sash and features a baked, white enamel finish for beauty. The gears feature a corrosion-resistant finish, and the case is made from die-cast zinc and the arm is made from steel for durability. The handing for this Prime-Line Operator is determined by the window's hinge location when viewing from the outside looking in. If viewing window from inside the home looking out, please see opposite handing.