Milgard window balancers

Quick Learner from Sutter Creek, CA

Hi. I'm trying to replace some Milgard window balancers. I removed the two sets in the picture. They came from two of the same windows but the numbers are different. Not sure what I need to replace them. I'm pretty confused about what the numbers mean. Thanks for any help.

Mark 

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Bob
Bob from SWISCO
SWISCO
Expert

Thanks for posting, Mark. Those stamps refer to the spring calibration of the channel balances, or essentially the weight ranges the balances can support. They however tell us nothing of the balances' identities. To know what kind of balances you need, please show us pictures of the nylon fittings or attachments at either end of the metal channel. From there we should be able to help. See the video below.

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