non-tilt block and tackle

Question

I need two replacement block and tackle balances. see attached pictures. 21" length metal to metal. 5/8" depth. I think the stamp is 2040 on the side. any advice of how to order?

User submitted photos of a window balance.

Paul · Accepted Answer

Looking at your nylon attachments, I would recommend our S350-21 channel balance. I would also recommend a 2040 option. Check it out and see what you think. All orders can be placed directly on our site.