Window balance question

A Series is determined by the nylon attachments, as you've rightly guessed. We could custom make a balance with a 19-002 top and 15-003 bottom, but I would double check your shoe, though. 15-003 is not all that common.

It would be more likely that you have a 15-001 or 15-002. The Series 351 uses the 15-002 while the Series 390 uses the 15-001. Please carefully compare their dimensions to your own hardware and see which is a better match.

Yes, I think pictures at this stage would be best. Please show us a top sash guide (as undamaged as possible) and the nylon attachments of your balance, both top and bottom. Thanks!

Thank you for getting back to us! Our 18-138 top sash guide is longer than yours, but that shouldn't matter. What matters is the width that fits in sash, which is 3/4", and the screw hole placement, which is 1".

If you're confident you have a 15-003 shoe, then we can custom make your balance for you. Check out this Custom Channel Balance Request Form I've started for you based on your specifications and fill out the blank fields. One of our representatives will get back to you with a price quote and an item to add to your cart.