channel balance question - 28D

Home Owner from florida
I have 1/2 inch width channel balance that measures 29 inches long. there is a stamp on balance that reads 28D. Is that equivalent to 2840(23-28 lb.)? Thanks in advance. Bob
2 Replies
Casey
Casey from SWISCO
SWISCO
Expert
Hi Bob,
Typically yes, the 28D translates to 2840. We give the window sash weight range so you can weigh the sash to be sure.

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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