Paul from SWISCO responded:
January 12, 2015
3160 may be what you need. This can carry a window sash weight of 32 through 35 pounds. What is the weight of your sash? If it does not fall under any of the ranges we have listed on the chart for our S350-32, then tell me what it is and we can try to help from there.
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Paul from SWISCO responded:
January 13, 2015
Sure, a 3165 option can carry a window sash weight of 35 through 39 pounds. I still have a strong suspicion that you need the 3160, though. Check the option on your balance and see if it reads, exactly, "3190 BSI OD 34." If that is correct, then the 3160 should work. If not, then you need to weigh your sash.
The thing is, options ending in the digits "90" are not standard and so it is recommended that you weigh your sash. There is the possibility that your sash weight exceeds even the 3165, which would mean you need a custom made balance. |