Kozy World Dual Fuel Vent Free Gas Wall Heater, 10,000 BTU - GWD104 Product does not operate in elevations above 5000 feet 10,000-BTU dual-fuel gas wall heater for spaces up to 300 square feet Electronic piezo ignition system provides easy start-ups; dancing blue-flame burner Safe-watch pilot assembly, built-in oxygen-depletion sensor, and pressure regulator for safety Variable heat control; 99-percent efficient; wall-mounting brackets included Measures approximately 6-3/8 by 14-1/8 by 19-1/8 inches It is illegal (non-shippable) to California