Wall mounted cabinet

Hi all,

I'm looking for an affordable solution for a wall mounted comms cabinet. I currently have a Vynco vcc40 in-wall board, but it's not deep enough. My plan is to remove the doors and put a wall mounted cabinet over it.

I therefore need an open backed cabinet roughly 450w x 450h x 350d

It can be taller and wider but i cant go much deeper. Also probably dont need fans, but a glass/see through door would be good. Any suggestions?