Prime-Line TH 23020 Single Arm Operator, 9-1/2", W/Crank, L.H., Bronze

Worm gear driving mechanism inside diecast housing, with steel arm and 3/8" diameter spindle. Used on steel and aluminum-framed windows.

Snap-on cover offers traditional styling and easy replacement. 11/32" drive spline.

This wood casement operator with track is constructed from steel and comes finished in bronze. It features a worm gear driving mechanism and a steel arm. This type of casement operator is used on wood and vinyl framed windows.

Prime-Line H 4300 Casement Operator, 9-Inch Square Type, Left Hand, Aluminum This casement operator is constructed of a diecast body, a hardened steel arm (with a steel guide button at 9/16 inches in diameter), and a case-hardened worm gear mechanism that comes in a corrosion resistant plating. It features a square-shaped housing and an operator crank handle, and comes finished in an aluminum painted color. This Prime-Line casement operator is left-handed, determined when viewing the window from the inside looking out. It is a face-mounted design that installs on older, crank-out ...

Heavy bronze casting; polished white bronze finish; 1-3/8" hole centers for steel windows; used by many commercial window manufacturers.