length of channel balance

A handy person from Auburn, Wa. says:
I have 2 series 380 channel balance. The channel balance w/o top and shoe is 24-7/16". Is this a special order?
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Mike from SWISCO responded:
Can you please give us the number printed on the balance?
A handy person from Auburn, Wa. says:
I looked for a number on the channel and found none.
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Donna from SWISCO responded:
The closest length balance we would have for this balance series or similar measures 25".
Please remove the window sash and place it on a scale.
We need the weight of the window sash in pounds to determine the proper stamp option.
A handy person from auburn, Wa. says:
The sash weighs 22#. I did find numbers on the other counterbalance, "23 1/2 9 30# TK CALDWELL" Thanks for your help.
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Donna from SWISCO responded:
We only have balances that measure on the full inch. I'm not sure if 24" or 25" will work.
Balance series 380, 24" with stamp option 2340 will carry a window sash weight range of 18 through 22 pounds.
Balance series 380, 25" with stamp option 2440 will carry a window sash weight range of 19 through 24 pounds.
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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