The ProOne® shower filter with massage head is made from ABS plastic and is BPA free. Best operated at 80 psi and 100º F. Shower head is rated at 2.0gpm. Fits 1/2” NPT, ISP and BSPT pipe thread standards.Easy to install. Includes a roll of Teflon tape.Up to 6 month filtration capacity.Dimensions: 3.5″ x  9”Replacement Filter: PM-RFIndependent Lab Report