MW (now PlyGem) Window Parts
Handy Person from 28557
Jul 29, 2020 4:59 pm
I"m looking for the plastic pieces in the attached photos that the spring/string attaches to. These are in vinyl, single-hung "WM" windows that were installed when my condo was built ~18 years ago. I haven't been able to find any other markings on the windows themselves, other than the "WM" logo on the window lock. Are you able to locate suitable replacements?
3 user uploaded images
4 Replies
Tom from SWISCO
Aug 3, 2020 12:24 pm
We should be able to help, but we can only supply a completely new balance. Your original balances haven't been made in a long time and you pretty much need to replace the whole assembly with a modern version.
Before I recommend anything, though, I'd like a clear picture of the bottom end of your balance. I think I know what you have but given the circumstances I want to be 100% sure. I'd also like to know the diameter of the spring.
Handy Person from 28557
Aug 3, 2020 4:01 pm
See the attached photos for the bottoms of both sides of one of my window's balance. The spring OD is 1/2", and the ID is ~3/8".
2 user uploaded images
Tom from SWISCO
Aug 4, 2020 11:10 am
Thank you. I believe you can use our 1/2" wide Series 795 plain channel balance as a replacement for your original. However, the method of replacement is somewhat involved. I highly recommend watching the video below, which should cover everything you need to get the new style balance working in your window.
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