iSpring HB18B Water Filter Housing 10″ X 4.5″ in. , 1-in. NPT Ports Product Description10″ Water Filter Housing with Pressure Release and 1″ NPTSpecification:10″ Heavy-Duty housingPressure Release Button1″ inlet/outletWrench to open and tighten the housingsMaximum Temperature: 100DegreeF (37.8DegreeC)Maximum Pressure: 90 psi (6.2 bar)Fit standard size filtration replacement cartridges: 4.5″x10″.