I got sick of cutting holes out of junction boxes from Home Depot so I decided to make my own with all the cutouts for all the components already in it.  This is obviously a very specific configuration for me but figured there are probably others out there interested in this type of configuration.  This is for a 240 volt controller so the incoming cable is 10/4 cable with associated cord grip that tightens into the hole. There are also countersunk holes to secure each component. There is a little wiggle room with the screw holes to move the components a small amount. The lid is secured with some custom screws you can tighten and loosen by hand. I never liked how you needed a screwdriver to take the lid off of regular junction boxes. The floor of the inside of the box has some wire organizers which helps everything look clean. 

List of components I used:

 [https://a.co/d/2395nau](https://a.co/d/2395nau) terminal block
[https://a.co/d/aBoBeYK](https://a.co/d/aBoBeYK) volt amp meter
[https://a.co/d/4Wl3xB4](https://a.co/d/4Wl3xB4) Fan
[https://a.co/d/cD5YOQN](https://a.co/d/cD5YOQN) plug
[https://a.co/d/1CSvVg7](https://a.co/d/1CSvVg7) SCR
[https://a.co/d/eFJhFXu](https://a.co/d/eFJhFXu) cable grip