Portway Arundel XL 4.9kw Defra Multifuel Stove. Portway Multifuel stoves can also burn a variety of other fuels, including anthracite, peat briquettes, and other mineral fuels. Defra ApprovedYes. Built with a robust steel body and a cast iron door, this stove not only promises durability but also enhances the visual appeal of any room.