Radflek radiator reflectors reduce your heating bill by reflecting wasted energy back into your room instead of heating the wall and the street outside. This product contains 3 sheets and is silver in colour. Most efficient, Energy Saving Trust recommended radiator reflector. Radflek reflects back into the room 95% of the heat energy radiated from the back of your radiator. Reduces your heating bill and your carbon footprint - Radflek can pay for itself in under a year. Radflek is very quick and easy to install - once installed, nobody knows it is there.