Flowmatic® filter housing with buttress threads for 9-3/4 Inch filter cartridges. Made from NSF® and FDA grade materials. Available with or without pressure relief button.• Compatibility: FH4200 Residential Housing Series• Inlet Size: 1/2 Inch• Inlet Connection Type: Female Threads• Outlet Size: 1/2 Inch• Outlet Connection Type: Female Threads• Length (IN): 10 Inch• Color: White• Material: Plastic• With Pressure Relief Valve: No• With Base: Yes Made In USA Easy To Install Limited 1 Year Warranty | Flow-Pur Flowpur/ Watts Fresh Water Filter Housing