Window Balance (no numbers)

Hello there.  I am sure we can help, but first, can you show us more pictures of the balance's underside or 'guts'? Some balances from the west coast have a special design we need to account for. Once we see whether or not that is an issue here we can proceed. Thanks.

Thanks for getting back to me. This looks like either an S380-30 or S385-30, depending on the depth of the bottom nylon shoe. See below. Measure your old balance's shoe depth to see what matches best.

Comparison of the S378, S380 and S385 balance shoes.

For the stamp option, if there's no stamp on the old metal channel, weigh the window sash as accurately as possible. A bathroom scale should suffice. You can use that exact weight to choose the right stamp option, based on the charts on either the S380-30 or S385-30 shop pages.

Great! Let us know if you need anything else, and thanks for contacting us.