This bundle includes one Central Heating Protector and Cleaner and one Fernox F1 & F3 Scale Inhibitor to safeguard your home heating system. The product is made for storage tank water heaters and comes in a convenient 265ml size. The Fernox brand is well-known for its quality and reliability, making this bundle an excellent choice for anyone looking to maintain their home heating system. The unit quantity is , providing ample product for multiple uses. Protect your home heating system with this FERNOX F1 & F3 Bundle.