Celtic Sheet Metal Inc

238220 - Duct work (e.g., cooling, dust collection, exhaust, heating, ventilation) installation; 238220 - Heating, ventilation and air-conditioning (HVAC) contractors; 238220 - HVAC (heating, ventilation and air-conditioning) contractors; 238220 - Sheet metal duct work installation; 32073 - Screws, Sheet Metal; 91036 - Heating, Air Conditioning, and Ventilation Maintenance, Repair and Installation Services; 91450 - Heating, Ventilating and Air Conditioning (HVAC)