Replacement channel balances

A quick learner from yorba Linda Ca. says:
March 17, 2011
I need a replacement window channel, I will attach photo's. The measurements are 1/2" wide X 34" metal to metal,long with a spring inside

Thank you
Dick
user submitted photo of channel balance and attachements
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Paul from SWISCO responded:
March 18, 2011
Thank you for submitting photos. We will be able to recommend a replacement sash balance for your windows. We just need to know what the stamp is marked on the metal channel of the balance. Take a look for the stamp, sometimes it is very faint.
A quick learner from Yorba Linda Ca. says:
March 19, 2011
The only marking (stamp)is, "a 33-3"

I have more pics if needed

Thanks
Dick
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Donna from SWISCO responded:
March 23, 2011
Hi Dick,
The 33-3 most likely translates to 3330. A 34" balance of this type with stamp 3330 will carry a window sash weight range of 18 through 23 pounds

The balance fittings look like 19-005 Top and 15-004 Shoe which is our series 385 replacement balance.

See S385-34 with the option 3330.

This information is based on 2 balances per sash. Balances are designed assuming friction in the jamb weather-strip will carry a portion of the sash weight. Suggested sash weights are approximate.
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