Gear replacement

Thanks for reaching out! Your window operator is similar to the 39-253LB. It appears to use the 39-529 Truth Hardware Track Slider, which slides in the 39-528 Casement Track. The opposite version can be found tagged below along with the other compatible hardware and accessories.

To determine if this is the correct replacement match, carefully look over the specifications below and compare them.

Dimensions for 39-253LB