S STERLING

FINNED TUBE RADIATOR ELEMENTS, ENCLOSURES, FITINGS, AND PARTS; BASEBOARD AND SUSPENSION TYPE FINNED TUBE HEATING SYSTEMS; GAS-FIRED DUCT FURNACES, GASFIRED SPACE UNIT HEATERS; PROPELLER FANS AND CABINET BLOWERS FOR HEATING AND AIR CONDITIONING DUCT SYSTEMS; UNIT HEATERS, MAKE UP AIR UNITS, ROOFTOP HEATING AND COOLING SYSTEMS, FIRE DAMPERS AND ENCLOSURES