Prime-Line TH 23031 Single Arm Operator, 13-1/2", W/Crank, SILL MOUNT R.H., White

OPERATOR COMPONENTS INCLUDE: HIGH PRESSURE DIECAST ZINC CASE; HANDLE AND KNOB IN BAKED ENAMEL FINISH; HARDENED STEEL ARM, DRIVE WORM AND GEARS ARE PROTECTED WITH CORROSION RESISTANT FINISH; PLASTIC ROLLER ASSURES SMOOTH OPERATION; OPERATOR PROVIDES A FULL 90° WINDOW OPENING AND DISCONNECTS EASILY FROM THE SASH.