Window crank with arm

Thanks for writing in! Your casement operator resembles an older style version of the 39-315 and the opposite handed version, part 39-316. Carefully review and compare the measurements shown on the diagram below to your existing operator to determine if this is the correct replacement.

Alternate image for 39-315

This operator is compatible with the 39-114L non-folding and 39-205 folding crank handles. 

If you are looking to replace the brackets, it appears the one connected to your operator is part 39-546. The one compatible with the opposite handed operator is part 39-545.