This is the vita series
British Thermal Unit per hour is the standard used to state the output of any heat generating device.
BTU is another measurement for heat output, 1 watt is equivalent to 3.412 Btu/hr.
Stelrad Limited is a company registered in England and Wales, with company number 02263368. Registered office 69-75 Side, Newcastle Upon Tyne, Tyne and Wear, NE1 3JE.