Very solid, well built unit.

It's a good unit that includes the parts I consider essential - the 6" collar, a damper and a screen

Sturdy well built units.

We've installed several of these and it is a consistently good unit with no issues

This unit should not be used for snow areas (way too short) or hurricane areas (poorly functioning baffle), or 'particular' people (too much noise from the baffle flap operation transferred down the pipe.