This BB 20" Triple Series Plumbed Filter Housing DIY 1" FPT consists of three 20" Big Blue Housings which are plumbed in series with a wall mounting bracket and hardware. The system consists of a series of large capacity #20 Big Blue housings, allowing for greater cartridge capacities and higher flow rates. Each system is also equipped with a pressure relief button to relieve housing pressure during cartridge changes. All filter housings are manufactured of a durable polypropylene, have excellent chemical resistance and are ideal for many residential, commercial and industrial applications. Features: System does not include filter cartridges Assembly required System for reducing Sediment & Chlorine Taste & Odor Can also be used for Prefiltration before a UV System Available in Black/Blue and Black/Black Specifications:  Connection Type: Female (FPT) Inlet/Outlet Connection: 1" FPT Max Pressure (PSI): 90 Max Temperature: 100°F Flow Rate: 40 GPM O-Rings: Buna-N Cap Material: Polypropylene Housing Material: Polypropylene Features: Pressure Relief Includes: Bracket: 1 Housing: 3 Lag Bolt: 14 Pipe Seal: 1 Appropriate Sized Nipple: 2 Filter Wrench: 1