designer's own words:ZiG You don't need to hide your radiator behind the curtains; show it off! ZiG is the new heating source with the appearance you want. Have as much as heat as you need; start with the 24cm X 24cm unit, built it on top of each. [ex. 5-unit, open ZiG has approximately 1m2 surface area] Increase the heat; Pull the bars out, have 33% much heat [24cm X 24cm unit has 0.14m2 closed and 0.21m2 open surface area] +Each bar has heat insulated handles on each side for easy and safe rotation. Personalize it; Choose your favourite colour for the bars and the body.