The Thermon HP1-16-A1A1-2A explosion-proof unit heater delivers reliable, high-output heating for hazardous industrial environments. Featuring a heavy-duty steel heat exchanger and 16″ fan, it produces up to 74,000 BTU/hr with 115 V single-phase power. Designed for use with steam, hot water or glycol, its rugged, corrosion-resistant construction ensures long service life and safe operation on demanding jobsites.