FILTER ASSEMBLY 1/4" NPT Head Anod = Alum., Bowl = Zinc, Internal = Nylon Seals = Buna N 220F Max Temp, 250 psig Max / 5 psig Min 1.5"W x 4" L NOTE: qty one BX grade filter included with filter housing 99.99% efficient at 0.01 unit micron for Particles and H2O.