6 Metal chimneys; metal stovepipes; pipes, clamps, and fittings therefor of metal; metal building products, namely, formed metal conduits, and metal screens both with and without shutters incorporated therein; chimneys for fuel burning appliances, namely, furnaces, fireplaces and stoves made primarily of metal; fittings of metal for pipes; flexible metal connector pipes; ventilating ducts of metal; metal chimney liners; metal chimney parts, namely, metal baseplates, couplings, tee sections, covers, rain caps, spacers, collars, stove connectors and adapters; metal chimney caps; metal chimney cowls; metallic venting pipes and tubes of metal for appliances using various fuel sources; metal venting parts, namely, metal connector pipes for venting; metal pipes elbows for pipes, tees, and supports; metal vent adapters for chimneys; alignment pipes, namely, alignment pipes of metal for venting; tee-caps, namely, metal tee-caps for venting; metal tee-caps for venting having metal latches; metal vents for venting gas appliances; metal roof hatches, smoke vents, floor doors and sidewalk doors; metal all-fuel chimney systems composed of metal chimney lengths, elbows, tees, and accessories in the nature of chimney sections, pipes, expansion joints, slip joints, joints, drain plugs, increasers, penetration assemblies, closure rings, storm collars, caps, stack termination caps, and cones; chimney and pipe system installation parts made of metal, namely, flashings, split angle rings, flange adapter kits, supports, and guides; metal chimney system parts, namely, supports and buckets; metal duct connectors; access doors, roof hatches, garage doors, and static heat and smoke vents, all made of metal; ventilation systems comprising metal gas vent pipes and metal chimneys; metal air duct fittings for use with air distribution systems; pipes of metal for central heating and ventilating installations and structural supports and parts therefor; chimney parts primarily of metal, namely, chimney sections, pipes, expansion joints, slip joints, joints, drain plugs, elbows, tees, increasers, penetration assemblies, closure rings, storm collars, caps, stack termination caps, and cones