The Mr. Heater High-Intensity Radiant Overhead HS9100SSPLP Liquid Propane Auto Spark Ignition heater directs radiant heat to floor-level objects, which in turn, heat surrounding air to the desired temperature. Personnel and objects at floor level enjoy instant, cost-saving comfort. Ideal for use in drafty or windy areas like a loading dock or mechanic bays where doors are open during winter conditions. At 99.9% efficiency, it transfers almost all of the fuel it burns directly into clean safe radiant heat. It is equipped with an auto-spark ignition system, a safety shut-off on the pilot and burner, and ships with a 120V/24VAC/40VA transfomer. Mr. Heater's high-intensity heaters are protected by a 10-year, pro-rated burner assembly warranty and a limited one-year gas control warranty. Consult the user manual for installation instructions and for clearance to combustible guidance. Color: Silver.