Futura FPH-1000-1 electric panel heater.
It's a 1000W maximum heater. It's got a curious electronic setting mechanism and oddly we no longer have the manual but there are YouTube videos which show you what to do with it I believe.
It's on castors that can be locked in place.
Electric panel heater (Goldhanger CM9)
This offer has been gifted to someone and is no longer available.