window channel balance

Handy Person from Wisconsin
I would like to order a 17" channel balance for a double hung window installed in 1979 but don't know how to select from options 16R, 16HD and 16TG. Can you explain? Photos attached. My plan is to order one and see if it works. If it does I would order several more.
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Casey
Casey from SWISCO
SWISCO
Expert

Hello,

I assume you're referring to the strength options for our S751-17 channel balance. There should be a stamp on the metal channel of your original balance that correlates to one of these options. There is also a chart under the balance product description that indicates the sashweight range supported by each option. Thank you!

Stamp Option      Sash Weight Range

16R                     10 to 17 lbs

16HD                  17 to 22 lbs

16TG                  22 to 24 lbs

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