Protects Against Corrosion & Scale;When Used with F3 Cleaner Can Achieve 15% Gas Savings;Stops Frequent Venting of Radiators;Prevents Sticking Pumps;Prevents Radiator Cold Spots

• Fernox 56599 F1 500 ml Central Heating Protector

Fernox 56599 F1 500 ml Central Heating ProtectorFernox