The Fernox F1 500ml Central Heating Protector is a product manufactured in the United Kingdom. It is designed as a sludge and scale cleaner specifically for central heating systems. This solution helps to protect and maintain the efficiency of your central heating system by preventing the build-up of sludge and scale, ensuring it runs smoothly. With free delivery included, this product offers convenience and peace of mind for homeowners looking to keep their central heating system in top condition.