SWISCO - The Replacement Hardware Authority

Anderson window sash balance

A handy person from vernon, NJ says:
in my Anderson window was a sash balance with the following markings: BL8 10# 31 85. What replacement sash balance should i use/

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Tom from SWISCO responded:
I recommend our 24-1033. This can replace Andersen sash balances with the stamp 10#31.
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