Product review (5 stars): Just what I Needed!
I was having major trouble with lint in my 1978 houses' venting system because of the way it is designed and this fit the bill exactly for what I needed.  It keeps ALL lint from getting past is and I have not had a dryer problem since I installed it.  It is easy to clean out (some sharp edges so be careful) and my wife even uses it without hassle.  LOVE IT!