The Pentek 158204 filter housing has 1/2 NPT inlet/outlets. The Pentek 158204 filter housing uses 20 L x 2.5 W water filters. The Pentek 158204 slim design reduces space required for installation without sacrificing capacity. FDA Grade The Pentek 158204 has a leak-proof seal with a top-seated o-ring. The housing has four bosses molded into the cap for mounting purposes. The Pentek 158204 Slim Line filter housings are an excellent choice for low-flow applications and when space and chemical compatibility are concerns. The water filter cartridge is not included with the housing. This allows you to purchase the best water filter for your water supply. The Pentek 158204 is molded from rugged reinforced polypropylene. The Pentek 158204 can be used in under-sink in countertop residential filtration in pre- and post reverse osmosis filtration recreational vehicle filtration and food service and humidifying systems. The Pentek 158204 housings have a black reinforced polypropylene cap with a pressure release button. Dimensions of 20 Slimline Blue Water Filter Housings: 21-7/8 x 4-3/8 (556 mm x 111 mm). Maximum Temperature: 125°F (51.7°C). Maximum Pressure: 125 psi (8.62 bar). Initial ?P (psi) Flow Rate (gpm): 2 psi 5 gpm (0.14 bar 19 L/min.- SKU: CWD1982