The Hayward DEX2420F Bulkhead Fitting is a strong plastic fitting intended for use in swimming pool filtration systems. This bulkhead fitting, is an essential component for providing leak-free connections between various elements of the filtration system. It is only compatible with Hayward Swim Clear cartridge filters, which include models C2020, C3020, C4020, and C5020. The DEX2420F'... https://www.usapoolshop.com/dex2420f-hayward-bulkhead-fitting