Tom from SWISCO responded:
July 14, 2016
I agree, the S385-34 looks to be a good match. I would recommend weighing your sash on a scale to determine the proper stamp option. If none of our standard options can support the weight of your sash, let me know and we can work from there.
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Tom from SWISCO responded:
July 20, 2016
Hmmm... the strongest spring we carry is the 3375, which can only carry 42 through 45 pounds. It would also need to be a custom order. Could you get that to work? Could you confirm the exact weight of the sash? If it can work for you, please tell me how many you will need.
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