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Acetylene Burners; Water Purifying Units for Domestic Use; Electric Bath Heaters; Air Blast Heaters; Blower Type Electric Heaters; Electric Water Boilers; Gas and Electric Burners; Ceiling Fans; Fluorescent Lighting Fixtures and Parts Therefor; Electric Circulation Heaters; Electric Lighting Fixtures for Commercial, Industrial [ and Home ] Use; Air Handling Troffers; Drum Heaters; Electric Air Heaters; Baseboard Heaters; Convection Heaters; Broiler Heaters; Cylinder Heaters; Food Table Heaters; Industrial Screw Plug Immersion Heaters; Electric Space Heaters for Household and Industrial Use, Portable Electric Fans; Industrial Fans Used for Ventilation and Exhaust Purposes; Electric Hot Air Furnaces; Electric Hot Plates; Electric Radiators; Electric Immersion Heaters; Evaporative Coolers; Residential Electric Exhaust Fans; Valves for Plumbing and Heating Systems; Air, Gas and Water Filtering Units for Industrial Use; Finned Duct Type Air Heaters and Open-Coil Electric Heating Elements Used in Duct Heaters; Steam Heat Accumulators; Electric Water Heaters; Electric Non-Coin Operated Hot Water Dispensers; Humidifiers for Central Heating Systems; Infra-Red Heaters; Electric Furnaces; Central Air Conditioning and Heating Units; Electric Heaters for Industrial Furnaces; Electric Ovens; Parts for Fluorescent Lighting Fixtures-Namely, Prismatic Lighting Panels; Radiant Heaters; Electric Steam Boilers and Generators; Steam Superheaters; Strip, Ring, Disc, Tubular, Cartridge and Clamp-On Heaters; Stud and Bolt Heaters; Track Switch Heaters; Ventilating Hoods With and Without Filters; Water Taps; Gas Burner Igniters; Valves and Nozzles for Drinking Fountains; Electric Coffee Urn Elements; Electric Industrial Nozzle Heating Elements, and Filter-Driers for Use in Refrigerant Lines