Option Numbers

Professional from orlando
Sep 20, 2009 4:25 pm
I have S351 Balances with 2310, 2320, 2330 option numbers. These are old windows and the parts may have been replace before. What is the difference between the different option numbers
4 Replies

Casey from SWISCO
Sep 21, 2009 8:20 am


The difference between the different stamp options for SWISCO balance Series 351 is the weight tolerances.
Please remove the window sash and place it on a scale. The weight of the window sash in pounds is needed to determine the proper stamp option.
Stamp option 2310 will carry a window sash weight range of 5 through and including 9 pounds.
Stamp option 2320 will carry a window sash weight range of 9 through and including 15 pounds.
Stamp option 2330 will carry a window sash weight range of 15 through and including 18 pounds.
Stamp option 2340 will carry a window sash weight range of 18 through and including 22 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.
Please remove the window sash and place it on a scale. The weight of the window sash in pounds is needed to determine the proper stamp option.
Stamp option 2310 will carry a window sash weight range of 5 through and including 9 pounds.
Stamp option 2320 will carry a window sash weight range of 9 through and including 15 pounds.
Stamp option 2330 will carry a window sash weight range of 15 through and including 18 pounds.
Stamp option 2340 will carry a window sash weight range of 18 through and including 22 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.

Quick Learner from Jacksonville, Fl
Feb 13, 2012 11:01 am
when you says "This information is based on 2 balances per sash." you are saying that each balance is designed to hold half of the weight? so if a sash weight 15lbs than I would need two 2320 balances or two 2310?

Casey from SWISCO
Feb 13, 2012 12:46 pm


Thanks for posting. You were right on the first count; for a 15 pound sash, you would need two 2320 stamped balances, or two 2330 stamped balances. I hope this answers your question.
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