Boshart Industries filter housings are great for agriculture, water well, point of use, greenhouse/drip irrigation, whole house residential and recreational vehicle applications. They have a threaded inlet and outlet with a relief button on the inlet side. These housings fit industry standard filter cartridges (not included). The filter heads have mounting bosses molded in for installation with a mounting bracket. Each unit comes with the housing, O-rings, filter bowl wrench and a mounting bracket with hardware.