NEED 2 PAIRS OF WINDOW BALANCERS -- FOR THERMOPANE (HEAVY WINDOWS)

Thanks for posting. Sounds like you have a 29" long and 23" long block & tackle balance. Now you just need to pick out the top and bottom fittings in order to determine the Series.

I recommend that you look at our Channel Balance Home Page and follow the steps in order to find the Series that best matches what you have.

I also recommend weighing your sash so that you can determine the right option. "2890" and "2290" do not match any of our standard spring strength options, so you will need the sash weight to determine what can work.

Thank you! Yes, I think we can make these balances for you, though they will have to be custom made. Can you just tell me how many of each you need? Thanks!

Great. I've emailed you a custom order link for each, which also includes price quotes. You can use these links to add the items to your cart, at which point you can continue shopping and check out as normal.