S770 but for a Heavy sash

Question

I need to replace Channel Balances for tilt windows similar to your Series 770 (plain channel with spring on top, block & tackle pulley on bottom with 15-043 Terminal Clip which attaches to 15-129 Pivot Lock Shoe.)

Mine are 36F for heavy 39 lb. sash. Your 36 goes to D weight.

What are my options? Can I use your Series 880 Hybrid Balance? Can I reuse my spring in your S770 36D? My springs are 22.75? long unweighted.

Thank you,
Paul

Tom · Accepted Answer

Hi there, Paul! We can supply this balance to you as a custom order, due to the extra strong spring it will need to carry your sash. Can you just tell me how many you need?

Once I know that, I can email you an order link and price quote for that quantity. This will be like a private store page that only you can see. It will let you add the balances to your cart as if they were a standard product.