D.O.T. approved. Has four 0.5 inch ports and two 0.3 inch ports. Dimensions: 6 inches height and 17 inches length. Black powder coated finish. Powder coated interior to prevent corrosion.
Revain lists ports as .3 and .5. What the hell is that? But if you go to the manufacturer's website, the ports are listed as: Ports 4 - 1/4 NPT and Ports 2 - 3/8 NPT. Dimensions: 6 H x 17 in.