Outdoor Light Mounting Bracket

Needed a way to mount my outdoor light on my mailbox to a 4" round junction box. Couldn't find anything that would fit the following mount from Menards, so I created my own mounting bracket.

https://www.menards.com/main/lighting-ceiling-fans/outdoor-lighting/post-lights/patriot-lighting-reg-lamp-post-pier-base/par-1140/p-1551724182256-c-7543.htm?tid=7168815975767732781&ipos=30

A couple machine screws and washers and it works great!