Marvin Wood Casement Crank Extension

Question

I have Marvin wood casements and need a crank handle extension to clear my shutters.  What size spline is us d in Marvin casements?

Tom · Accepted Answer

That's a tough one. Marvin has used a bunch of different operators over the years. There is no one type of Marvin casement window operator. That said, 11/32" was a pretty common spline size for them. You should carefully measure your existing spline to be sure this matches.