This donut right here is radiator Zero Otto. With its round, sensual curves it is an interesting alternative to the regular square radiators.
Zero Otto was designed by Francesco Lucchese for Italian heating company Antrax. It comes in a single and a double version, which you could place horizontally and vertically. The single element has a diameter of 80 cm, the double version measures 80 cm x 140 cm.
It is these two versions which inspired the name: Zero Otto is Italian for Zero Eight - the two shapes.