Product review (4 stars): Works for Me
I'm not sure that you can get an 8' stretch out of this hose.  When I initially took it out of the package I could only get it to stretch 4 1/2 feet without forcing extra footage.  I finally did get it to stretch close to 7' but it wants to snap back a bit unless I tightly close the window on it (afraid it's gonna tear in that area).  It may loosen up after being used for a while.  After I stopped laughing at the ridiculous clamps that came with this vent hose I used the two clamps I purchased when I purchased the hose.  I purchased two Whirlpool clamps at amazon but received two Maytag clamps.  Makes no difference, they look the same.  The hose seems to work fine but you have to be careful handling the ends of the hose because the slinky type wire easily pulls away from the aluminum wrap. Seems pretty sturdy otherwise.