Paul from SWISCO responded:
October 20, 2015
I agree, our Series 390 looks to be the best match. I'm not sure about the stamp, though. What is the weight of your sash?
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Tom from SWISCO responded:
October 20, 2015
The only difference between the Series 390 and Series 351 is the size of the shoe. Double check the size of your shoe to confirm which is better.
However there is still the matter of the stamp option. This indicates how strong your spring is. I think your sash may weigh 36 pounds, but this would mean your balance would have to be custom made, regardless of whether you have the S390-36 or S351-36. This is why I would like you to confirm, just in case. |
Tom from SWISCO responded:
October 22, 2015
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Tom from SWISCO responded:
October 23, 2015
Great. If you have the S390-36, I recommend the 3550 option. Two balances with this option can carry a sash weight of 30 through 35 pounds.
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