Light-weight, completely algae-free black ABS plastic. Tasteless, odorless and non-toxic. Meets strict FDA specifications. Will never rust or corrode. Made of high-grade plastic. One-piece extruded construction eliminates the possibility of leakage. Baffles as required for added strength. Easily installed, universal design. Drain and vent connection can be placed anywhere. Supplied with 3/8" threaded, fitting inserts on each end. Tanks should not be suspended and should be mounted horizontally onto a flat surface. Do not mount vertically. Tanks should not be pressurized. Do not place tanks on the pressure side of a pump.