28D Channel balance
Handy Person from Illinois
Nov 18, 2016 11:45 am
I have 5 windows with channel balances marked 28D. All of them spring up when the locks are unlatched. Would buying 29D balances solve this problem?
5 Replies
Handy Person from Illinois
Nov 18, 2016 11:45 am
The bottom sash is 28.75H. I forgot to include that in the original post
Tom from SWISCO
Nov 18, 2016 2:18 pm
I'm not sure what it is you have, so I can't say for sure. Is there a specific SWISCO Series balance you were looking at? Also, a balance stamped with 28D should have a different length than a balance stamped with 29D. Your issue sounds like the spring is too strong, which wouldn't be fixed by installing a longer balance. Keep in mind that these stamps are not part numbers, or identification numbers, and should not be considered as such. They just indicate a few physical aspects of a balance, but there is much more that goes into identifying a replacement balance than just going off of the stamp.
I think at this point it would be best if you show me a picture of your balance so that I have a better idea of what you're working with. Without anything to go off of as a reference, I cannot make a confident suggestion.
I think at this point it would be best if you show me a picture of your balance so that I have a better idea of what you're working with. Without anything to go off of as a reference, I cannot make a confident suggestion.
Handy Person from Illinois
Nov 18, 2016 5:29 pm
It is a 770 series. I just thought it was odd that 16yo balances would be pulling up like that which is why I was wondering if they were too short. I thought I had seen a sizing guide before, but I must be mistaken. It is stamped 28D
Tom from SWISCO
Nov 21, 2016 9:03 am
Did they only just start pulling up like you describe, or has this always been an issue? Also, what is the weight of your sash?
Most channel balances have a lifespan of 5-10 years, depending on how often they're used. If yours are 16 years old, then it could be they're just old and the springs don't work like they used to.
Most channel balances have a lifespan of 5-10 years, depending on how often they're used. If yours are 16 years old, then it could be they're just old and the springs don't work like they used to.
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