Aluminum 6" tanks feature a highly polished finish and a completely removable top to enable thorough cleaning. Three internal baffles are fastened to the top for easy removal and cleaning. All tanks have two 3/8"NPT female ports on the top cover for vent lines or return lines and a 3/8" female NPT bottom port for easy draining. Tanks are offered in two versions, an AN version with a 16AN return fitting and a -12AN supply fitting or an NPT version with two 3/4" NPT female ports for return and one 3/4" NPT female supply port. Mounting brackets must be purchased separately. Capacity listed is fluid filled to approximately 4" from top of tank. 1" of tank height equals approximately 1/2 quart of fluid.