Metal industrial duct and hose products, namely, industrial metal hoses, metal ventilating ducts, metal pipes, metal expansion joints for piping and ducting, and metal pipe connectors; Metal couplings for use with metal, rubber and composite hose; Metal hose fittings; Ventilating ducts primarily of metal and parts and fittings therefor, metal ventilating duct fittings in the nature of adapters, connectors, reducers, elbows, clamps, hangers, collars, wye branch connectors, end caps, tee's, rain caps, flashings, storm collars, terminations, supports and damper sleeves

Industrial hoses made of plastic and textiles for use in the handling of liquids, solids, slurrys and gases; Non-metallic industrial duct and hose products, namely, industrial hoses made of plastic, rubber and fabric for use in the handling of liquids, solids, slurrys and gases, non-metal flexible pipes made of plastic, rubber and fabric for use in the handling of liquids, solids, slurrys and gases, non-metal expansion joints for piping and ducting made of plastic, rubber and fabric, and non-metal pipe connectors made of plastic, rubber and fabric

Ventilating ducts primarily of non-metal and primarily non-metal ventilating duct fittings in the nature of adapters, connectors, reducers, elbows, clamps, hangers, collars, wye branch connectors, end caps, tee's, rain caps, flashings, storm collars, terminations, supports and damper sleeves; Non-metallic industrial duct products, namely, non-metal ducts made of plastic, rubber and fabric