180/280 Idler Wheel - Black length_75 Feet They have been third party

They have been third party certified to NSF/ANSI 372

At least one hydrostatic relief valve in a set of suction outlets will allow hydrostatic uplift pressure caused by ground water to be relieved into the pool or spa

It is the ideal lift for facilities that cannot permanently anchor their lift on the deck due to design constraints

Its natural crimp and elasticity give woolen bedding the ability to store air and create a perfect insulation layer that helps the body maintain its ideal temperature

180/280 Idler Wheel - Black length_75 Feet They have been third partyThis is a Zodiac C17 Black Idler Wheel,Small, for Polaris Vac Sweep 180 280 Pool Cleaners.