Product Details
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 teardrop-shaped housing and an operator crank handle, finished in a bronze 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 casement steel window frames with 3-7/8 inch and 4-3/4 inch mounting hole centers. This high-end quality operator exhibits minimal gear lash, providing positive and smooth operation. For the opposite handing of this operator, see model number H-4291. Installation fasteners and a set screw for affixing the crank handle onto the operator spindle are included with each operator.
