Ashley Model AGDV12N. The Ashley direct vent natural gas heater requires NO electricity. With up to 12,000 BTU's per hour, it is designed to heat a space up to 275 Sq. Ft. This unit mounts on any outside wall for direct venting. The matchless piezo ignition makes lighting easy. The automatic shutoff and thermocouple safety valve make this unit safe in any room in your home. Includes all venting accessories.