Non-tilt window channel balance advice

Question

Hi!

I have an old house (circa 1930) and am working to replace the channel balances on a window

When I took the bottom sash out, I found a single, old spiral balance on one side. It's 31" long and seems to be about 7/16" wide.

I assume I should replace this old one with two new ones? Is it important to match the old spiral balance, or fit to the window's dimensions? The window channel is 5/8" wide, is 34" tall, and weighs 13.5 lbs.

I'd really appreciate any guidance!

Much thanks -

Dan

Bob · Accepted Answer

Hey Dan. Our Series 500 Non-Tilt Window Spiral Balance is often a good choice to replace these old wood window spiral balances. If the tube is 31", see our S500-31. For a sash that weighs around 13 pounds, use a Red Tip option. Now, you may need a new bracket to attach to the spiral tip--our 17-012 is one such possibility. Keep in mind some customers report this bracket works fine for their windows, whereas others have complained it is too large. Unfortunately I can't say what will be the case for you--trying it is really the only way to find out. For peace of mind, you can view our Return Policy here in the event something doesn't work out. Let me know if you have any other questions.