Window balance

Hey there. I am confident we can replace these channel balances, but I need clearer photos of the nylon attachments at both ends. I need a photo of the stamp on the metal channel. I also need the length of the metal channel, not including the nylon end attachments. That'll narrow it all down.

Thanks for your patience. That is a good view of the bottom attachment, but I still need to see the top one as well. Also, is there any stamp on the metal channel? Many thanks. 

Thanks for getting back to me. See the S351-22 or S390-22. The only difference between these two channel balances is the shoe depth--see below. For the stamp option, weigh the window sash these balances support. You can use that weight to choose the right stamp option.

Comparison of the S351 and S390 balance shoes.

The measuring tape must be perpendicular to the metal channel, as shown in the photo above. If the depth is any greater than 1", it will be the Series 390.