Identifying window Channel balances

Thanks for posting. I'm confident we can help, but I'd like to check one extra detail. Can you show me the point where the spring and pulley connect in the 'guts' of the metal channel? Once I take a look at that, I should be able narrow this down for you. Many thanks. 

That's a huge help, thanks! Based on what I see here, you can use either our S380-27 or S385-27, depending on the depth of the bottom shoe. That's the only difference between them. I recommend measuring your shoe and referring to our dimensions to confirm the best match.

Comparison of the S380 and S385 balance shoes.

Sure, your old stamp of 26-4 usually corresponds to our 2640 stamp. Two balances with this option carry 19 through 26 pounds. If you have any doubts, you can always weigh your sash on a scale to verify that it falls in that range.

Great! We really appreciate the order, it means a lot.

Please don't hesitate to reach out if we can be of any further assistance.