Product review (4 stars): Great for A/C not so great for ferrets.
Great for it's intended purpose as an A/C duct.  But i didn't buy it for that, i bought it for my ferrets.  As do most of the people buying this item.  First off you only get 8' if you REALLY stretch it tight.  Secondly it's NOT as durable as everyone rants & raves that it is.  My ferrets have clawed & bitten their way through the PVC walls of this tubing.  Which is really what i expected, i mean they are ferrets after all!  =)  So it's great as just a see-through tunneling system for them to play in when you have them out of the cage.  Just don't expect it to be escape proof if you hook it up to the cage & leave them unattended.