Searching for Series 350 28" 27000h

A quick learner says:
I am looking for a Window Balance: Series 350 28", Stamped 27000H
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Casey from SWISCO responded:

Hello,

The stamp number you've provided does not match up to our spring strength options but if you are certain that the S350-28 is a match to your balance, you can weigh your window sash and follow the chart below to choose the correct option. Thank you!

Stamp Option       Sash Weight Range

2710                    5 to 9 lbs

2720                    9 to 13 lbs

2730                   13 to 19 lbs

2740                   19 to 26 lbs

2750                   26 to 30 lbs

2760                   30 to 33 lbs

2765                   33 to 36 lbs

2770                   36 to 39 lbs

A quick learner says:
I had to look at the stamp number again. It was actually 2740. Thanks!
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