Atrium windown balance replacement

I want to buy the replacement part for ATRIUM window balance, it's measured as 27" long and 1/2" wide. See attached picture for more details. The marking found is "86 26-4 EB5 CMC 54" on existing hardware.
Thanks
Jian



Hi there, Jian.
We can help supply replacements for this balance but it will have to be a custom order since your balance is stamped with the number "86". What I will do now is email you an order link that you can use to place an order on our website. Please note, the replacements we'd be sending you will have winged top and bottom fittings. I know your bottom fitting lacks wings but it'll still be fine. I just wanted to give you a heads-up!
Another note: there is a 5-6 week lead time.

Thanks



Our stock balances cannot replace those with an 86 stamp, unfortunately. We've tried it before and the standard balances always end up breaking. The manufacturer specifically designed your balance to only be replaced by others with the same 86 stamp and it's what they recommend.