Casement window operator

Question

I nee.d to replace a window operator. Attached are pictures. The existing operator is marked as Truth with #31858 stamped on it. This appears to be the Swisscom 39-253RB. (Window hinge is on right hand side when looking fr
Pm outside to inside. Could you please confirm this is the correct part number?

Lauren · Accepted Answer

Hello, thank you for posting,

I agree that your operator resembles the 39-253RB as long as the dimensions match up to your original. This operator uses the 39-529 track slider. I cannot confirm from the pictures, but if the cover of your operator is built in, please review the 39-376 or 39-452 cover and handle depending on style preference.

Let us know if you have any additional questions!