Napoleon GVFS20N Fireplace, Arlington Natural Gas Stove Vent Free 18,000 BTU - Painted Black (Stove Top NOT INCLUDED) Tested as a heater to the unvented heating standard ANSI Z21.11.2B Unit includes: millivolt remote control gas valve with built-in adjustable flame heat control, exclusive PHAZERAMIC&trade; burner, ember bed and logs, porcelain reflective rear panel, piezo igniter, on/off switch and safety "pilot on" indicator light, oxygen depletion sensor (ODS) Mobile home approved up to 23,000 BTUs Flame/heat adjustment to as little as 18,000 BTUs for maximum comfort and efficiency European cast iron design w