The Pentair 1354 is a standard size (13" diameter x 54" height) Fiber-Reinforced Plastic (FRP) pressure vessel used in water treatment, featuring a 150 PSI (10 Bar) max pressure, 102-104 Liter capacity, blue color, seamless PE liner, and fiberglass exterior, designed for residential/light commercial use in softeners or filters, handling temperatures from 34-120°F (1-49°C).