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6
Common metals and their alloys; metal building materials; transportable buildings of metal; materials of metal for railway tracks; non-electric cables and wires of common metal; ironmongery, small items of metal hardware; pipes and tubes of metal; safes; goods of common metal not included in other classes; ores.
flexible metal ducts, pipes and hoses for purposes of distributing and venting air and flue gas in residential and light commercial applications, namely, for use with heating, ventilating and air conditioning systems, and related accessories, namely fittings, connectors, hangers, reducers, elbows, locking bands, liner supports, adapters, spacers, termination boxes, wall thimbles, drain tees and end caps all made of metal
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11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes.
ventilators for use with venting flue gas in residential and light commercial applications, namely, for use with heating, ventilating and air conditioning systems
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17
Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal.
non-metal, flexible ducts, pipes and hoses for purposes of distributing and venting air and flue gas in residential and light commercial applications, namely, for use with heating, ventilating and air conditioning systems and related accessories, namely fittings, connectors, hangers, reducers, elbows, locking bands, liner supports, adaptors, spacers, termination boxes, wall thimbles, drain tees and end caps all made of metal