Pentair Rainbow Cap Chlorinator, White | R172008W Fabric Floats it is a maintenance-free cover

it is a maintenance-free cover that provides pool owner complete peace of mind during the off-season that their pool investment is not only protected against the elements

Bottom diameter: 9-1/8" Fits Into

with water seat for infant or toddler

UV exposure and cold-weather cycling cause the hinge tabs to become brittle over time — a weir that doesn't swing freely will pass less surface debris into the skimmer and reduce overall skimming efficiency

Insert blue piercing tool into large center hole

Pentair Rainbow Cap Chlorinator, White | R172008W Fabric Floats it is a maintenance-free coverPentair White Threaded 3 Inch Cap for Model 320, 322 In Line Automatic Chemical Feeders, Automatic Chemical Feeders, Commercial Size Chemical Feeders. Features and Benefits: High quality materials for durability and longevity Designed for the 3 inch top of the chemical feeder Cap measures 4 inches Genuine Pentair replacement part.