Prime-Line H 3914 Window Operator, For: Older Wood Framed Windows, Left, Diecast Bronze

The H 3914 casement window operator is a left handed bronze surface mount body type with 4 mounting holes in the top of the body and mounts directly onto the sill. It has a 9 in steel arm with a round disc on the tip. The disc slides in the H 3595 casement track located on the bottom edge of the casement window. It is worm gear driven by a 3/8 in crank spindle. The matching crank handle fits onto the crank spindle and installation screws are included.