Fwd: extended-travel window channel balance

Question

Unable to upload pictures to special order request.

Length: 25 inches by ½ inch

Stamp: 24302? Hard to read as it is scratched off. Pic included.

Home built in 1983, windows appear to be original.

Need 4 of them.

Jasmine · Accepted Answer

Thanks for posting. Your channel balances appear to be either the S351-25 with a 1" shoe or the S390-25 with a 1-1/8" shoe.

To determine which series is needed for your window, look over the dimensions from the diagram below to confirm the depth of your bottom shoe. You'll need to select the 2430 stamp.

Comparison of the S351 and S390 balance shoes.