Need one left and one right assy.

Hey there,

Thanks for posting! Your casement operator looks a lot like our 39-253LB Encore Dual Arm Operator; the opposite handed version is the 39-253RB. Carefully review and compare the dimensions to your existing operator to confirm that this is the replacement you'll need.

Dimensions for 39-253LB

The compatible handle and cover sets are the 39-375 and 39-376 folding handle and cover kits or the 39-451 and 39-452, which are non-folding.

I've linked a few other pieces of hardware such as the track slider, the track, the brackets and one compatible screw that you could possibly use in the installation.