Andersen window crank extensions to avoid blinds

Question

We are adding shutters to Anderson casement windows and need an extension to allow the windows to open.
Will the #39-157 extension with 11/32 spline fit the Anderson hardware???

Paul · Accepted Answer

I'm afraid our 39-157 extension will not work on a Andersen operator. Our 39-422 will, but please note that since it isn't Andersen product, it won't be completely mesh to the operator. Andersen uses a unique spline length.