Casement window operator

Question

Existing casement window operator. Markings visible on the original hardware are 10182905 and 5251, with a Roto marking/logo. The operator is left-handed and has a single arm approximately 9-1/2 inches long. I'm looking for the correct replacement for this exact hardware.

Bob · Accepted Answer

Hey there. How does this operator compare to the 39-027E and 39-028E 9-1/2" straight arm mechanisms? Please compare. For a handle see the 39-114L sold separately.

Dimensions for 39-027e