speaker corner and wall mount

this is a corner mount for some cheap speakers I got off of amazon
One has room for trim the other is just for a regular wall.
link for the speakers here https://www.amazon.com/gp/product/B0857DMHRH/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1
Edit: I realized when printing that the mounting holes were too big for the screws that I had so I edited the model it's the one called speaker mount smaller holes. also, I'm not sure if this is in any of the models but the mounting bracket was popping out of the model but I fixed that in the more recent one.
Edit again: I added one for just a flat wall