Clean Face with huge ceramic disappearing glass Flush Hearth for authentic look of a wood burning fire Design-A-Fire allows you to mix and match features Electronic ignition converts to standing pilot at the push of a button Natural gas or propane Battery back-up to operate during power outages Versatile installation up to 110 feet from an exterior wall Superior materials and construction Smart Home Control System compatible Total square inches of viewing area: 691 BTU Input NG/LP: 35,000 high, 27,000 low Efficiency 34.5% (Based on CPSA P.4.1-15)