A Glen Dimplex fireplace that is 510 mm wide. Black is just one of the colours this fireplace comes in.
From Wayfair
Dimplex Club Optiflame Electric flame effect Stove with 2kW heater and remote control, 51cm W
Big on Electricals
Dimplex Courchevel Freestanding Electric Stove (White) - CVL20N
This product is also available at 1 unverified merchant.