Casey from SWISCO responded:
May 18, 2011
Good morning, Ken.
Your balances appear to match up with the Swisco Series 770 Channel Balance. However, the stamps and lengths are normally the same. The 21HD stamp will usually measure 21", and the 11TG stamp will usually measure 11". Please re-check the lengths of the channel portion only. Also, please give us the sash weights so we can determine the appropriate stamp option. You will have to remove the window sash and place it on a scale to get the sash weight in pounds. |
Casey from SWISCO responded:
May 18, 2011
Ken, can you provide us with your sash weights?
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Casey from SWISCO responded:
May 26, 2011
Hi Ken,
Take a look at SWISCO product 26-377 Pivot Bar, this has the same 8254 stamp. |
Casey from SWISCO responded:
May 27, 2011
Hi Ken,
Remove each window sash and place it on a scale to get the weight in pounds. 12" Series 770 balance with stamp option 12B will carry a window sash weight range of 7 through and includng 10 pounds 12C will carry 10 through and including 16 pounds 12D will carry 16 through and including 18 pounds 22" Series 770 balance with stamp option 22B will carry 10 through and including 16 pounds 22C will carry 16 through and including 21 pounds 22D will carry 21 through and including 24 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. |