Casement operator

Thanks for reaching out! Your window operator reminds me of the 39-341 Roto Dual Arm Casement Window Operator; the opposite handed version is the 39-342. These operators use the 39-541 Roto Casement Track Slider which is compatible with the 39-542 Roto Casement Track.

If you're in need of the handles, you can use the 39-232 Roto Folding Crank Handle.

Alternate image for 39-341

Side profile view with additional measurements