I recently installed shutters with pam am crank style windows - I need to find an extension crank so my customer can operate her windows
Dave Sr. from SWISCO responded:
May 7, 2014
Thank you for posting. Check out our 39-157 and 39-337 and see if these could possibly work for you. The spline for these extenders is 11/32". What is the spline for your handle?