top sash guide

A quick learner from acton, ca. says:
January 14, 2017
what is the purpose of the slanted portion on the bottom of a top sash guide?
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Paul from SWISCO responded:
January 19, 2017
This would be to help align the balance top as it slides into and hooks onto the guide lip.
A quick learner from acton, ca says:
January 19, 2017
Ok I have alenco windows from the 1990's and your top guide 18-174 dimensions are the same as the ones on my windows, except the ones from my windows have the slanted portion on the bottom of the guide but the 18-174 guides have no angled portion. Will they still work?
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Casey from SWISCO responded:
January 20, 2017
Take a look at SWISCO product code 18-009, Top Sash Guide. If this does not match up to your original, please send us a photo or detailed drawing with measurements; we would be happy to research it for you.
5/8" Top Sash Guide
5/8" Top Sash Guide
18-009
$0.99
5/8" Top Sash Guide, Alenco
5/8" Top Sash Guide, Alenco
18-174
$1.96
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