Product review (3 stars): Decent product at good price, DOES require you purchase 4" worm gear clamps
Does the job. Don't expect to use the included tension clips to install this, it specifically says you still need to buy the 4" worm gear clamps, which you do. The tension clips included with it are a pain to install and they definitely don't provide a seal on either end. Not sure why they're included other than to mislead that no added hardware is needed, but wish I'd know as I wound up having to make a trip to the hardware store anyway to pick up the right clamps.