(Oxygen Depletion Sensor) Push Button Piezo Ignition System Product Dimensions: (24" H x 18.50" W x 8.0 D) Safety Assured ANSI Certified System Newly redesigned cabinet for slimmer profile! MADE IN USA - Product is proudly made in the USA with domestic and imported parts.Skilled American workers manufacture the parts, assemble, and test our products. Only high-quality materials and parts are used in the manufacturing of our products. Our factory features state-of-the-art manufacturing equipment. TECHNOLOGY - This compact Infrared heater produce 20,000 Maximum BTU and using Natural Gas which heats your room in perfect way DEPENDABLE - Thermostat Control offers the most customizable 5 heat settings Ideal for greater heat flow that could add the warm atmosphere in your room STYLISH - Without compromising function for beauty, this versatile gas space heater has been redesigned for a slimmer and modernized profile to effortlessly fit into your home. SAFE - Push Button Piezo Ignition with Built-in pilot oxygen depletion sensor (ODS) immediately shuts down the heater if carbon monoxide or lack of oxygen is detected! Also ANSI Certified to ensure the safety PORTABLE- No electricity is required which is perfect for power outages or any in-house urgencies.