Casey from SWISCO responded:
November 24, 2010
Hi Don,
You may be correct, the Series 350 was used at one time by Weathershield. Please post some images, we would be happy to take a look. |
Thanks,
Don
Tom from SWISCO responded:
November 29, 2010
Yes, this does appear to be the Series 350.
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Casey from SWISCO responded:
August 22, 2011
Hi Dan,
Yes, normally there are two balances per sash. If you have the same balance series as shown above, Series 350, and the balance is stamped 2030, it should measure 21" (excluding the balance fittings). The 21" Series 350 with stamp option 2030 is designed to hold a window sash that weighs anywhere from 12 through and including 15 pounds. To get the sash weight remove the window sash and place it on a scale. 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. For help on removing the window sash and replacing this type of balance see the following instructional guide: |