Paul from SWISCO responded:
May 30, 2013
Thanks for posting. First, how about our S390-22? Could that be a match? I also recommend the 2120 option, but you might want to weigh the sash and compare it to the rating shown for that option just to make sure it's a match. As for the top sash guide, it looks similar to our 18-142. What do you think?
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Tom from SWISCO responded:
July 5, 2013
Did you see the weight rating chart under the S390-22, like I mentioned? If your sash is 14 pounds, then you should go with the 2130 option. Two balances with that option can carry a window sash weight range of 12 through 15 pounds.
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