casement window operation

Hello there. Without seeing photos of your old operator I can't be certain of what you have, but some Marvin windows have been known to use either the 39-031 and 39-032, or the 39-155 and 39-156. These two sets of operators look a lot a like, but the length of the link arms is a little different. Review the dimensions below and see if either of these sets matches what you need. For a compatible handle and cover, see the 39-107 and 39-114L sold separately.

Dimensions for 39-031

Dimensions for 39-155