Restore smooth operation to older steel-framed casement windows with the Prime-Line Casement Operator. Designed as a replacement for worn or damaged crank-style window operators, this assembly helps restore reliable opening and closing performance while maintaining proper sash control. It is commonly used on older steel-framed casement windows and mounts on the right side of the window when viewed from inside the home looking outward.
Constructed for durability, this operator features a diecast housing and crank handle paired with a hardened steel arm and heavy-duty worm gear mechanism. The aluminum-painted finish helps provide corrosion resistance and a clean appearance, while the robust drive system is designed to deliver smooth, consistent window operation over time. The square-body design matches many original operator styles found on older casement window installations.
Designed for easy replacement, the operator mounts using hole patterns spaced at 3-7/8 in. and 4-3/4 in. on center and includes a matching crank handle and installation fasteners. This complete replacement assembly helps eliminate binding, difficult operation, and worn operator performance. Before purchasing, compare mounting hole locations, arm dimensions, and spindle configuration with your existing operator and review the line drawing to ensure compatibility.
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