Missing all hardwear

Hi, Dana. 

I'm afraid we can't help without the original balances to use as a reference. It's just not possible to ID a match without that. Is there another window in the house that's identical, or at least the same brand? If so, we can use that as a reference. 

Thanks for the additional pictures, Dana! This is a huge help. If this window is the same brand as the one with the missing balances, odds are they use the same configuration as what you show in these new batch of pictures. Just keep in mind, our recommendation is an educated guess. 

With that said, your balance looks like a match for our Series 380 or Series 385, depending on the depth of the bottom fitting. The Series 380 has a 1" deep shoe, while the Series 385 has a 1-3/32" deep shoe. You'll need to measure as shown in the diagram below to determine the best match. We'd also like you to confirm the visible glass height and obtain the precise sash weight for the window with the missing balances. That will help us calculate the length and strength option for your replacements. 

Comparison of the S380 and S385 balance shoes.

You know your stuff, Dana! I consulted with one of our senior experts and we agree that you'd need a 26" long balance, like the S385-26 with the 2540 strength option. You're also correct regarding the 25 2 stamped balance, you would want the S385-26 with the 2520 option. If you also needed the top sash guide in your first batch of pictures, see our 18-008 which looks like a great match. 

Thank you for your business, Dana! We truly appreciate it. Good luck with your repair and we'll be here if you need any further help!