Product review (1 stars): Visible minute holes and cheap material
I ordered this after reading all good reviews, but i am disappointed. I held up the duct towards light and I can see several light rays coming in. Put my hand over it, the light rays stop. I notice several such small, minute holes all over the duct. May be I got a defective one (i doubt it). I also did not like the clamp, it is pretty basic and hard to install with it.