[NY65912]

I ran 4" lightwall aluminum tubing and long radius elbows, coupled by hi temp silicone couplings. The line is buried for the most part in the ceiling from an interior wall out straight through to the out side wall. I have two 90°s and then straight out. It still builds a lot of lint. I clean out twice a year.

To the OP....you can get a booster fan to help suck/push through specifically for dryer vent.

I think the lint problem is due to crappy clothing.