Lightness in radiator design. Slim, flat oval tubes give this designer radiator an airy, transparent, latticed look, a modern take on the company founders’ original 1964 design. Ideal for all rooms requiring a fast-acting heating system, the radiator is available with 12 different spacings between the elements, giving you the freedom to design your own individual heating solution. This radiator can be finished in almost any colour and has all the characteristics of a bestseller. RUNTAL RX. A milestone from the Runtal Design Studio.