Crestline Casement Operator
In that case, we'll need to know the exact length of your operator arm from the center of the gear, as shown in our photo, to confirm if a closer match is available.
It looks like you are showing the same operator as your original thread above. If so, we'll need you to write out the length of your operator arm, measured from the center of the base as shown below, to research this further for you.
Thanks for getting back to us. Unfortunately, we do not carry a version of this operator with an 11" arm. The 39-365 would be our best option, but since your old style operator is no longer made and the arm length differs, we can't guarantee it would work. You may be able to make adaptations, some of which may include modifying the sill trim and adjusting the position of the 39-520 track used with this operator, but it may be too different at the end of the day. If you decide to give it a try and run into any trouble, our return policy can be found here.