Balance unit strength

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Dave Sr. from SWISCO responded:
August 25, 2010
For your query on the weight, see this discussion on S795 weight.
A contractor from Gainesville FL says:
August 25, 2010
We have replaced glass units in 6 existing windows with units built with laminated glass. The windows are Silverline 2900 series SH and the existing balance units are designated 30-3, 18-5, and 24-5. To handle the additional sash weight Silverline has recommended: 30-5, 18-7, and 24-7. Their 3 week delivery is too long. Can you quote an equivalant unit with delivery prior to Sept 2nd? We need 2 ea. of the 3 sizes. Closest unit I see in your website is a 795 series. But I cannot decipher how to specify balance strength. Rick, Gainesville Windows & More
29" Series 795 Channel Balance
29" Series 795 Channel Balance
S795-29
$13.77
30" Series 795 Channel Balance
30" Series 795 Channel Balance
S795-30
$13.87
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