Opus Melody Defra Approved:Yes Large Brick Effect Vermiculite Board Large Brick Effect Vermiculite Board 1020mm x 620mm x 25mm Both models have a large stove glass set in a solid castiron door Direct external air supply (DEAS) capability is included on on all Melody models and there's just 150mm (6") of safe distance to combustibles needed at the sides and rear of the circular footprint to offer you much greater installation flexibility Precise user friendly control via two sliders (primary boost and secondary) and generously sized airwashed curved window not only make the Melody a pleasure to live with and look at but also very easy to operate so that you can accurately control heat output and maximise fuel economy