SWISCO - The Replacement Hardware Authority

Pines Window Balance Spring Assemblies

A quick learner from West Seattle, WA says:
The metal portion of the assembly is 27 inches. I need two of these for a MilGuard Double hung non tilt window. Can you folks get me the part number and pricing??

Thanks,

Jim
User submitted photos of a window balance.
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Tom from SWISCO responded:
Hey, thanks for posting. I've narrowed this down to two possible channel balance Series: either our Series 380 or our Series 385 balances.

Now, as you can see, there is only one difference between these two Series, and that is their bottom shoe. The Series 380 uses the 15-005 while the Series 385 uses the 15-004. I can't quite tell what you have based on your pictures, though. Please carefully compare their dimensions to your own hardware and see which is a better match.
15-004 and 15-005
A quick learner from Southwest Seattle says:
I measured the front to back of the plastic guide and it is 1.090, so I guess that is the Series 385.

I have another window with a slightly wider aspect ratio, probably 1/3 larger which is using the same balance assemblies. The window, though heavier, is very hard to lower. It seems tight in the frame, could that be the problem.... the issue seems to be excessive tension, but.....

Thanks,

Jim
Profile picture of Tom
Tom from SWISCO responded:
Sounds like it could be a problem with the spring strength, yes. It's possible that the balances are too strong.
A quick learner says:
Only with the other window.
To recap, I need one balance assembly as originally discussed, and two at about half tension and at the 1.00" front to back dimension.

That make sense?

Thanks,
Jim
Profile picture of Tom
Tom from SWISCO responded:
Sounds like you need this other window to have Series 380 balances, rather than the Series 385 balances like the first one. However, you should really weigh that sash to make sure you get the correct spring strength. These are very precise systems and its important to have as exact a weight as possible.
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