How to install the 39-414

Hello,

The base of the 39-404 is meant to attach to the face of the window frame using screws, while the wheel at the end of the arm would ride in a track attached to the sash frame. Could you elaborate on what part of the process you're having trouble with?

If you're not able to install the new operator the same way as the original, it's also possible that this may not be the correct replacement. If you're unsure, feel free to get back to us with detailed photos of the original assembly. Thank you!