SWISCO - The Replacement Hardware Authority

18-166 isn't strong enough

A quick learner from FL says:
I have used the 18-166 to replace the broken ones, however, it seems that the plastic 18-166 was not strong enough. Can I use Aluminum Top Sash Guide, 18-010? or if you have other better ones.

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Paul from SWISCO responded:
You might want to consider our 18-064 nylon top guide. The overall wall thickness is much heavier and the holes line up to 18-166. I think either the 18-010 or 18-064 would work for you.
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