Tom from SWISCO responded:
September 15, 2015
Hey, Curt. If you have the 19-005 top and 15-005 bottom then our Series 380 would likely be the match you want. However, with a stamp like "14 2" you should have a length of 15", not 16". Please make sure you're only measuring the metal channel.
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Tom from SWISCO responded:
September 16, 2015
With a stamp of "14 2" I would recommend the 1420 option. If you go higher than that you risk the balance not working properly, since the spring will be too strong. If you're not sure the 1420 is correct, you can always weigh your sash on a scale to confirm.
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