Stops odors that escape from the holding tank vent, Contains odor-removing filter materials to keep boat smelling clean and pleasant, Each cartridge lasts for an entire season and is easily replaced for a fresh start, Vent filter includes mounting brackets and hose adapters, Product : DOMETIC HOLDING TANK VENT FILTER W/ BRACKET 5/8"", Manufacturer : DOMETIC CORPORATION, Manufacturer Part No : 309310002, UPC : 087735101219 SKU: CW37739