I use vent hose that's UL listed for use with dryers. I don't care for the semi-rigid corrugated foil venting. It dents easily and it's hard to install. If the dryer gets pushed against the wall it may kink the hose but then all you have to do is pull the dryer back out. If you push the dryer with semi-rigid vent against the wall, you have to remove the vent and either replace it or remove the dents. I rarely use more than 3 feet of vent hose.