Need new support coil balances for doouble hung vinyl tilt windows

Question

I have a rental home with two windows that won't stay open when opening. The city inspector said I need to repair or replace these windows to comply with the building codes. Only the bottom sash needs to be repaired. The first sash is 16.5" H X 31.5" W. I do not know how much it weighs. The second sash is 17" H X 44" W. I do not know how much it weighs. Please help, I do not want to have to replace these windows! The only markings I have found was an F stamped on the copper colored coils that were in the kitchen and a D stamped in the coil on the silver colored coils that were in the bedroom. Please help, thank you.

Paul · Accepted Answer

Thanks for the photos. Our 15-177 pivot shoe should be a match to your shoe. I also want to mention that our coil springs are screwed on to the pivot shoe with a 33-071 screw. Your coil springs should be compatible with our Series 152. The one spring you are showing us stamped with the letter, "D" will be our S152-4 and as for the spring stamped with the "F" will be our S152-6. If you like some more insight about coil springs, I have placed some media guides on this page you may find useful.