The 15 Series Operators have a high-pressure die-cast zinc housing that is electrostatically coated. The E-Gard coated gear arms and drive worm are made of hardened steel. The #15.32 Single Arm Operators (13-1/2") are designed for windows from 20" to 24" wide up to 65" high with a maximum sash weight of 55 lbs. when used with the proper 14 Series Casement Hinges.
