Window crank mechanism

Thanks for reaching out to us! This assembly reminds me of the 39-342 Roto Dual Arm Casement Window Operator. The opposite version is the 39-341. Both are compatible with the 39-232 Roto Folding Crank Handle.

Look over the dimensions to confirm that this is the correct replacement. Be sure to take a look at the other hardware tagged below to see if you might need them for the repair as well.

Alternate image for 39-342

Side profile view with measurements