HEAT SINK RS RECTANGLE EXTRUSION; Product Range:19754 Series; For Use With:Bridgelux LED Light Engines; Heat Sink Material:Aluminium; Thermal Resistance:0.68°C/W; External Height:190.5mm; External Diameter:114.55mm; SVHC:No SVHC (17-Dec-2015); External Diameter - Imperial:4.51"; External Diameter - Metric:114.55mm; External Height - Metric:190.5mm; External Length - Imperial:7.5"; External Length - Metric:190.5mm; Packages Cooled:LED