Vertical Black 1800 x 408mm Designer Radiator Layer Single Material Steel Weight 17.7kg Watts 648 BTU Rating 2150-2250 Power Source Hydronic(Hot water) Accreditations & Testing: Material: Low carbon steel Manufactured in accordance with BS EN 442 Registered: Complies with ISO9001:2015 Suitable for all UK central heating systems Thermostatic Radiators Valves Size may vary due to manufacturing process by +/-20mm if the stated size Thermostatic head and reversible bi-directional body Solid brass construction in Anthracite finish Built in sensor with liquid element Max Pressure Difference 0.8bar 1/2" BSP Standard 15mm compression inlet