Review on 🌪️ Efficient Dust Control: POWERTEC 70149 Flex Cuff with Hose Clamps, 4-Inch by Darin Schaffer

Easy way to connect sections of 4" air line that are not tapered or have slightly different dimensions, both are nominally a 4" -duct. The rubber grommets accommodate small size differences, which is handy if you need to install a new exhaust fan in an old 4" exhaust duct, for example. When tightening the radiator clamp, a seal forms around the edge that prevents air from escaping the duct leaking out that would otherwise ravage the air lines, much like how holes in a drinking straw make drinking difficult.It also helps dampen mechanical vibrations and therefore noise transmitted through sections of pipe, so using something like this makes the difference between a reasonably loud one turn off bathroom exhaust fan k ann or to others when switching on and off is much less annoying.