10 X 1.1 kW / 1100 Watt 348mm R7 Heater Bulb - 110 Volt. Can be used to replace Ruby or Gold 1.1 kW 348mm R7 heater bulbs. R7 / R7S push fit fitting. Output: 1.1 kilowatt / 1100 Watt per bulb. Heated area up to 9m square per bulb.