Mine are VINYL
1 - 4+ yrs old
2 - the vinyl itself is fine. they don't slide as easily as when new. they seem to get dirty 'quickly' and they're more difficult to clean than glass
3 - lightest possible 'smoke' and it's fine
4 - yes, plenty of air
5 - at the time I was very happy with the vinyl. I did not get acrylic because of cost AT THE TIME.
And........the rest of the story....... I had White Alum do my screen and vinyl. They did an excellent job. In the last few months I had them estimate the replacement of house windows. The same salesman did it and he mentioned that if we were doing the lanai today we could get glass windows there for about the same cost as the vinyl. Today I would go with glass.
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Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, cigar in one hand, scotch in the other, body thoroughly used up, totally worn out and screaming "WOO HOO what a ride!"
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