2 Broken Window Adjustments

Thanks for your post! Your window operators bear a close resemblance to both the 39-253RB and 39-439B Encore Dual Arm Operators. To determine which of these is the one you have, you'll need to compare the mechanisms and their compatible hardware to yours.

Take a look at the video tutorial below for a detailed explanation on their differences. Be sure to review the compatible hardware in the related products on the website (below the operator description), once you've confirmed the correct operator.