I needed junction box for one of my installs and here we go!

I work perfectly fine for indoor and outdoor installs , but it is not waterproof so make sure that you will use waterproof connectors for you camera wire.
Works good with ¾ pipe threaded PVC connectors but you might run the connector twice to clean the thread.
Use #6 screws for the cover (or m4) and connect you camera with any crew you like direct on the box cover. Its is a generic box that will fit most of the dome cameras on the market.

Enjoy It!