SWISCO - The Replacement Hardware Authority

Which Option for my Channel balance?

A quick learner from San Jose, CA says:
Hi,

I know that I need a 26" Series 351 Channel Balance but I don't know which option (2510, 2520, 2530, 2540) to order.

Looking at a past similar question and your answer, I can tell you that my widow sash is about 14 pounds (I don't guarantee the precision of the scale).

Which option should I order?

Looking forward to reading from you,
Regards,
Eric
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Donna from SWISCO responded:
The S351-26 with stamp option 2520 is designed to hold a window sash weight range of 9 through and including 15 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.
A quick learner from San Jose, CA says:
Hi Donna,
Thank you for your answer.

As I said, my scale is not that precise and at 14 pounds, I'm close to the limit of the 2520 option.

May I know the range of the next option?

Looking forward to reading from you,
Regards,
Eric
Profile picture of Donna
Donna from SWISCO responded:
Hi Eric,
The 2530 stamp option is the next weight range; it will carry 15 through and including 19 pounds.
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