The Quadrus Bold has been designed to maximise heat output by having two layers of bars, a full rear layer and forward layer with gaps for towels. The flat bars with closely spaced gap differ from the standard ladder rail creating a fuller looking overall design. The front bars protrude forward from the front of the upright bars and the rear bars are suspended between the uprights which results in a large gap within which to feed the towel. The Metallic Black colour from Terma has a light sparkle to it and has a matt, rough textured finish. Quadrus Bold can also be fitted as dual fuel – whereby it can run on the central heating in the winter and as electric in the summer. You simply need a Terma heating element and the Terma Integrated Valve with Immersion Tube.