Millgard replacement dual arm operator

Thanks for reaching out to us! Your window operator reminds me of either the 39-253RB or the 39-438B Encore Dual Arm Operator. To determine which of these is the right replacement, you'll need to carefully review the differences between each operator. Take a look at this video for reference.

I've tagged a few of the other compatible pieces of hardware and accessories below. You'll find the others in the related items section of the operators.