Casement window operators

Home Owner from Iowa

Aug 5, 2020 11:19 am

I have a Truth Hardware split arm crank operator similar to 39-172
Reviewing the dimensions though, my link arm is 4 3/8"
4 inches exactly from rivet center to hole in arm

Is 39-172 a replacement ? What is the arm's overall length center of operator to clip hole?

Mine is an offset with top mounted clip

4 Replies

Casey from SWISCO

Aug 7, 2020 12:52 pm

Hello,

If the dimensions are different, there's a good chance that there is a better replacement option out there. If you could show us your operator, including the arms, we'd be happy to confirm the best replacement for you. Thank you!

Home Owner from Iowa

Aug 9, 2020 3:26 pm

I believe the overall arm length may be the same 9" from center of closer to top of arm

4 user uploaded images

Casey from SWISCO

Aug 10, 2020 3:27 pm

Thank you for sending the photos. I agree that the 39-172 would be the way to go. If the slight difference in the length of the link arm is an issue, you may need to move the bracket that the arm attaches to beneath the sash to a different position to compensate for the slightly longer arm. Thanks for posting!