NEED REPLACEMENT FOR UNIQUE 27-D-40

A home owner from texas says:
THANK YOU VERY MUCH.
User submitted photos of a window balance.
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Paul from SWISCO responded:
Thanks for posting. Please see our S795-27 to start out. Just make sure everything matches, including the length of the metal channel and the width of the bottom shoe (1-1/4").
A home owner from Texas says:
Metal to metal this balance measures 28" but it stamped 27 D 40. What stamp option should I choose.
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Paul from SWISCO responded:
Ah, I see. That would depend on the weight of your sash. I recommend weighing it on a scale and referring to the chart we have on the S795-28 store page.
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