Fireline FX4 & FP4 multi-fuel stoves Superior, large-stove performance from a petite, narrow design means that these models combine the efficiency and economy of a small stove with the enhanced performance of a much larger model. Continuous research and development have created a clean-burning heat that gives a cleaner, greener environment. Fitting virtually any aperture, this attractive design is freestanding. There is a choice of square or curved door styling, both of which offer superb flame pictures whether you burn wood or other fuels. SIA Ecodesign Ready and DEFRA exempt as standard for use in any location.