Casey from SWISCO responded:
March 5, 2012
Thanks for posting. I would suggest the blue tip option.
S600-30 with blue tip designed to hold a window sash weight range of 12 through and including 30 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. |
Casey from SWISCO responded:
March 5, 2012
If you have a balance that is too strong, you will have a problem with the sash raising on its own. For this instance, the Blue tip is a very good strength for your sash weight. The next weight range would be a Black tip, which is designed for 31 through 40 pounds.
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