Roto Dual Arm Casement Window Operators

Roto Dual Arm Casement Window Operators with Hex Spline. Roto made 2 styles and are designed for 2 different applications. X-Drive operators with a protruding Hex shaped spline that the crank handle fits over. Pro-Drive operators have a hex shaped hole in the base and the crank handle has a Hex shaped shaft that fits into operator. Applications: Wood window operators have a notch out in the base. Vinyl window operators have a flat base. The X-Drive & Pro-Drive operators are interchangeable, same design, different crank handle.
To identify your Roto operators locate the part number imprinted on the underside of the housing. This number includes color code, model, function and wood or vinyl window type.