Single Arm Casement Window Operator 'Square' 7-1/2''(Truth Hardware 15.56.32.061)

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 #15.56 Single Arm Operators (7-1/2") are designed for windows from 16" to 22" wide up to 63" high with a maximum sash weight of 42 lbs. when used with the proper 14 Series Casement Hinges. The round (newer version) and square (older version) operator profiles are interchangeable. Most of the old square style profiles are discontinued. Use a roud operator profile as a replacement.