My house was built in 1947. My right hand window crank is bad (stripped gear). The arm is 9 inches long. Will the 39-344 fit? Where is the part no. of my window crank located?
Thank You
Fenestra/Detroit Casement window crank

Home Owner from Whitestone, New York
Oct 7, 2011 12:38 pm
6 Replies

Tom from SWISCO
Oct 11, 2011 10:41 am


Would you mind taking a few photos of your original window crank and uploading them so we can take a look?

Home Owner from Whitestone, NY
Oct 12, 2011 10:11 am
Attached is a photo of my window crank


Home Owner from Whitestone, New York
Oct 12, 2011 2:54 pm
Thank you. I will order the 39-001. If that works I will order some additional ones for other windows. Do you have any removal and installation instructions?

Dave Sr. from SWISCO
Oct 13, 2011 8:05 am


They shouldn't be too difficult to replace. You usually have four screws in the base that attach the operator to the window frame. After you remove the housing base, the long arm with the bearing should just slide out of the window track below the window sash.
Related Products
Related Videos
Related Guides