The 15mm Drayton RT212 Angled Thermostatic Radiator Valve TRV is a white, multi-positional central heating radiator designed for horizontal or vertical orientation. With a double panel and rotary knob control style, this valve offers 5 or more heat settings and is suitable for outdoor use. It is powered by hydronic hot water systems and includes a thermostat for added convenience. Made by the brand Drayton in the United Kingdom, this radiator is a reliable choice for efficiently heating spaces up to 200 sq ft.