SWISCO - The Replacement Hardware Authority

Help identifying window channel balance

A quick learner from Orlando, FL says:
Hello,

I need two replacement parts of the attached. The part is stamped

(06/2) UNIQUE 27-D-40

But as you can see from the attached, it is 28" long. So I am unsure which of the Series 770 to purchase.
User submitted a photo of a window balance.
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Tom from SWISCO responded:
If the metal channel is 28" long, then you might want to stick with that. You will have to weigh your sash to determine which of the S770-28 options is best for you.
A quick learner from Orlando, FL says:
Tom,

The sash weighs 23 lbs.

Some additional information - the windows are not the highest quality, and the sash does not go up and down in the channels easily.

Would you recommend the C or D?

Thanks.
Kevin
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Tom from SWISCO responded:
Thanks for getting back to us, Kevin. Since both 23 pounds is right on the cusp between the 28C and 28D options, it is really up to your best judgement. I would just double check to make sure the sash is exactly 23 pounds. If it's a little over or a little under, I would select the option accordingly.
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