The product is a 2 x 500ml Fernox F3 Central Heating Cleaner Fluid, designed to improve radiator efficiency in a boiler heating system. Specifically formulated by the brand Fernox, this cleaner fluid is modelled after the F3 formula to effectively clean and maintain central heating systems. Perfect for DIY enthusiasts looking to keep their home heating system running smoothly and efficiently. Brand new x stock sometimes the bottles may be worn. However it's brand new Posted fast
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