150w heater flat panel mount

I bought this 150w heater/fan to add to my Anycubic Photon S. I found out after I ordered it that the mount on the heater is for a curved surface (like a pipe?). So I modeled this adapter bracket to mount it on the flat side of my Photon S. It would also work to mount it on anything else with a flat side.

Holes designed for m3 hardware to screw directly into the plastic. 54mm circle in the middle.

Designed for this heater https://www.amazon.com/gp/product/B07F3PBX7J