Fernox Central Heating Protector F1 500ml shoptok Catches up to 5 rats Catches up to 5 rats in a single setting Galvanised mesh with machine finish without hazardous sharp edges Fully assembled and ready to use Protective hand plate and carry handle Includes lifetime guarantee 2 x Phillips®: PH00 X 50 & PHO X 75 environmentally friendly Protects against corrosion and scale in mixed metal central heating systems When used in conjunction with Cleaner F3 gas savings of up to 15% can be achieved every time you heat your room Stops frequent venting of radiators Prevents sticking pumps and boiler noise Reduces maintenance costs and saves on fuel bills Prevents cold spots in radiators Non toxic