NAPOLEON GD19N VITTORIA DIRECT VENT GAS FIREPLACE (ZERO CLEARANCE TOP OR REAR VENT) Napoleon's Direct Vent Gas Fireplaces do not require a chimney and can be vented directly through a wall or roof. The direct vent draws its combustion air from outside while venting to the same outside atmosphere - thereby not consuming warm house air, nor competing with other appliances and furnaces for combustion air. Direct venting also eliminates drafts and heat loss associated with other fireplaces. Unit includes: Electronic ignition gas valve with shut off, battery back-up and on/off switch, built-in adjustable flame heat control (natural gas only), Night Light with on/off switch, exclusive PHAZER log set with charcoal and glowing embers and ceramic glass. Bathroom/bedroom/bedsitting room approved. Suitable for mobile homes. Up to 11,500 BTU's. 45% flame/heat adjustment (natural gas) for maximum comfort and efficiency. TESTED AS A FIREPLACE TO ANSI Z21.50 & CSA 2.22