Catalog > Electro-Mechanical Components > Heatsinks > Extruded Standard Extruded Heatsink for Standard / for Extruded Heatsinks Standard Extruded Heatsink 4.3 - 2.2 K/W Part No: SK99-37,5SA 66.38 ZAR inc for 1 Each (Quoting) Add to Cart Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Specifications Thermal Resistance : 4.3 - 2.2 K/W Length : 37.5 mm Surface : black anodised Height : 20 mm Width : 54 mm Plate Thickness : 4 mm