Paul from SWISCO responded:
January 25, 2016
Please see our 18-192 top sash guide. Will this work for you? It appears to be very similar, and is made for Lawson windows, but see what you think.
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Paul from SWISCO responded:
January 26, 2016
Thanks for clarifying your measurements! Do you think the 18-166 would be a better match?
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