I am not using this for dryer ventilation, I am actually using it to vent exhaust out the back of my 3D printer enclosure using adapters to fit a 120mm fan to the ducting.This black outer skin makes the whole getup way less ugly, and possibly more durable. I wouldn't know because I've never worked with standard 4inch ducting before. I would probablyly buy this again if I needed to vent a dryer.
Rating: [4 of 5 Stars!]