window balance

A handy person from Sarasota says:
I need to replace a window balance (or two). I can not read the complete stamp on the balance - see attached image

the balance looks like the 16" Series 770 Balance. However, the weigh of the window is 24 lbs - and I only see option for up to 19 lbs - 16D

The only identification I can find on the entire widow is a sticker that states window conforms to FL standard and assume the window product is milestone single hung series 2000 - see pick attached.

Thanks for you help
Steve
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Hello! I agree, our Series 700 looks like the best match. We can custom make this with a 16F option, which can carry a sash weight of 22 through 24 pounds. Check out this Custom Channel Balance Request Form I've started for you based on your specifications and fill out the blank fields. One of our representatives will get back to you with a price quote and an item to add to your cart.
How to replace a tilt-window channel balance.
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