HEAT SINK RECTANGLE EXTRUSION; Product Range:-; For Use With:Bridgelux LED Light Engines; Heat Sink Material:Aluminium; Thermal Resistance:1.82°C/W; External Height:101.6mm; External Diameter:63.5mm; SVHC:No SVHC (17-Dec-2015); External Diameter - Imperial:2.5"; External Diameter - Metric:63.5mm; External Length - Imperial:4"; External Length - Metric:101.6mm; Packages Cooled:LED