1200 lb capacity kit for boat ramp sd 1200 the home depot. 4 in vent cap vc4 the home depot. 4 in x 5 ft round metal duct pipe cp4x60 the home depot. Nipple black pipe fittings pipes fittings the. Selkirk 4 in x 60 in steel round gas vent pipe 104060. Z flex gas fittings connectors pipe fittings. Nipples fittings black pipe fittings pipes.