Features and Benefits - Pair of Angled thermostatic radiator valves and lockshields - The Modal Valves are Non Bi-Directional - Made from high quality brass and finished in anthracite - The inlet and outlet are 15mm openings - Manufactured to a high quality using the finest materials and beautifully finished - Contemporary styling to compliment suitable designer radiators - You can be assured you are receiving a high quality product - Supplied with 1 year guarantee by Reina Technical Specs Radiator Valves Type Thermostatic Position Angled Radiator Valve Pipe Size 15mm Radiator Valve Height 125mm Radiator Valve Width 50mm Radiator Valve .