This is a minimal floating magnetic mount. Compatable with these unifi routers UCG-Ultra, UCG-Max, & UX. The magnets I used for this are here: https://www.amazon.com/dp/B0CC5HMKXP (7mm height, 36mm diameter cup magnets). Magnets hold very well, but not so strong it's difficult to remove.
The author marked this model as their own original creation.