Channel balance stamp 35 DS 37

A quick learner from Fl says:
March 22, 2017
I believe I will need series 380 channel balance in a 36" length (metal part). The stamp says 35 DS 37. What wieight is that?
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Tom from SWISCO responded:
March 27, 2017
That's actually a special kind of stamp for a sash that weighs 35 through 39 pounds. Does your sash's weight fall within that range? If so, we can custom make something for you. I would just need to know how many you need, then I can shoot over a custom order link and price quote.
36" Series 380 Channel Balance
36" Series 380 Channel Balance
S380-36
$12.27
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