Sash Balance Stamp 2790

Quick Learner from Dixon CA
Hello I was looking to purchase 2 sash balances for a project we are working on. The balance I found was the 28" Series 351 channel Balance but the options stop at 2770. Do you have a sash balance identical to the 28" Series 351 but has the strength and stamp of a 2790. The width of the channel is 1/2" the length is 28" metal edge to metal edge.
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2 Replies
Emily
Emily from SWISCO
SWISCO
Expert

Hi there!

The stamp on your balance might be outdated. You'll need to remove and weigh your sash to choose the appropriate spring strength option. There's a chart on the Series 351's product page that shows you which option you'll need based on the weight of your sash. 

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