Casement parts
Quick Learner from Idaho Falls, Idaho
Apr 19, 2026 3:13 pm
I have 1 left hand and 2 right. Do I also need a new crank and cover or will the ones I have still work? They just won't crank in. They go out nicely but I have to pull the window in while cranking it to get it to come in. Thanks!
4 user uploaded images
2 Replies
Bob from SWISCO
Apr 19, 2026 9:02 pm
This looks like either the 39-253LB & 39-253RB, or the 39-438B & 39-439B. The only difference between these two sets is the appendages at the end of the link arms. The former set uses a square shaped slider, the 39-529, sold separately. The latter set uses a rectangular slider that comes built-in with the operator itself. This difference affects window compatibility, to be sure to compare with your old hardware to confirm which you need.
You will need new covers and handles. See the 39-375 and 39-376, or the 39-451 and 39-452, depending on the style you prefer.
Related Videos