bracket for 80mm case fan to 3030 extrusion (Arctic fan)

The fan is screwed to the 3030 aluminum extrusion frame with just 2 of these brackets. I mirrored one of the parts so that the slots of the two brackets face the direction.
I use this fan https://www.arctic.ac/de_de/f8-silent.html

https://a360.co/2J8Q96W