mosfet cooling base (for 20x20 extrusion)

this is a cooling base for a heatbed mosfet (same as pictured) it fits on 2020 extrusion using m5 screws .
The mosfet attaches with m3 screws . (has threads for m3)
Takes a 40mm box fan that attaches with m3 screws . (has threads for m3)