5.737.877 Balance

A home owner from New Jersey says:
There is only a PAT. #5.737.877
I've been trying to find this window balance. If it helps it's a tilt Window..
I hope this helps in hopes you may have this.

Thank you,
User submitted a photo of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Good morning, Melissa. This resembles our Series 850 balance, but a little different. Can you tell me the total length? Can you also give me the diameter of the spring?
A quick learner says:
It's 31 inch long and possibly 3/8 inch diameter.. I think. Hard to measure it
Profile picture of Tom
Tom from SWISCO responded:
Thank you! I suspected as much. We can replace this balance, but it will have to be custom made. Before we begin, can you just tell me how many you need? Once I know that, I can email you a custom order form and price quote. Keep in mind that there is a minimum purchase quantity of two. Thank you!
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