High efficiency up to 78% Energy Efficiency Class A Multi-fuel (with external riddling) Approved for Smoke Control Areas* Tracery or clear door versions (matt black) Ashpan Airwash Nominal heat output and range 4.9kW (3 - 7kW) Maximum log length 9 3/4 ” (250mm) Room vent not normally required Boiler option Flue outlet 5” top or rear