SWISCO - The Replacement Hardware Authority

Window balances for milestone single hung series 1000

A quick learner from Florida says:
Window balance length is 29"
Stamp reads 28C USB
Last attached image is a sticker from the window
Milestone single hung series 1000
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Hello! I believe you have our S380-29 channel balance, but just make sure that the nylon attachments are the same size; especially the shoe!
A quick learner from Florida says:
Hi,

thank you for your response.
Series 380 and 385 look the same and look like my balances, thus i'm not sure which to get.
please advise,
thanks!
A quick learner from florida says:
Hi,

What are required options when i try to check out?
please see the attached.

thanks!
Profile picture of Tom
Tom from SWISCO responded:
The difference between the two Series is the nylon attachments. As Paul mentioned, you need to measure your own to confirm which is a better match.

The stamp option determines the strength of your spring. Based on your current stamp of 28C, I would suggest our 2830, but you should weigh your window sash just to confirm. We have a chart under each balance that shows how much weight each option can support.
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