Active Air Stainless Steel Duct Clamps, 12 in

  Features Available in 4", 6", 8", 10", and 12" Stainless steel and rust resistant Worm drive adjustable w/screwdriver for a super-secure fit Two per pack Product Min Diameter Max Diameter ACC4 4" 3 3/8" 4 5/8" ACC6 6" 5 3/8" 6 5/8" ACC8 8" 7 3/8" 8 5/8" ACC10 10" 9 3/8" 10 5/8" ACC12 12" 11 3/8" 12 5/8"