I'm looking for an extruded heatsink like the one in this image.
It has a row of 8x TO-220 devices attached via a clip system. The width is around 41mm, and the height from the (separate) cylindrical attachments is 26mm.
The current piece has been cut to 96mm to fit within a DIN rail mounted Phoenix enclosure, but I'm happy to buy longer pieces as I can cut/machine to length. Colour is not important either.

It has a row of 8x TO-220 devices attached via a clip system. The width is around 41mm, and the height from the (separate) cylindrical attachments is 26mm.
The current piece has been cut to 96mm to fit within a DIN rail mounted Phoenix enclosure, but I'm happy to buy longer pieces as I can cut/machine to length. Colour is not important either.
