Casement windows handle and operator arm

This window operator can be replaced with either the 39-253LB or the 39-438B Encore Dual Arm Operators. To determine which of these is the correct match, you'll need to determine the hardware used with yours. The video tutorial below details the differences between each of them; the dimensions for each of these operators can be found on the website.

You'll find the opposite versions of these operators and the compatible cover and handle kits tagged below. The other compatible hardware can be found in the related products for each operator, on the website, as well.