Hello I think this is a spring balance for my single hung window.

Question

The metal Chanel measures 29 inches. the metal is stamped 2830. I have seen several of theses online although some of the plastic parts are different and vary.How do I get the correct ones? or do I just order a 2830 and it will come with the correct plastic parts? Any help would be great.
Thanks
Caryl

Tom · Accepted Answer

Thanks for posting, Caryl. You won't be able to order by stamp, you have to choose the Series first. The Series is determined by the combination of nylon fittings so you'll need to figure that out before you go forward with anything.

Based on your photos, I believe that you have either our S390-29 or S351-29. The only difference between these two products is the depth of the bottom shoe, so you'll need to measure yours to confirm the better choice. We have detailed dimensions on each part's store page that you can use as a reference.