I'm not sure where to post this so forgive me if this annoying but where do you get side panels for a server rack? I recently bought a home with a 19" server rack with security and audio equipment and it's about 21-22" deep but it's adjustable- do server rack side panels have to be bought from the manufacturer or custom made/sized because I'm just finding the 19" blank panels for the front back and I've looked for several days off and on.

Thanks in advance- if it matters I'm not looking for a full side panel as I'm mainly trying to cover the power cords and the somewhat ugly floor and also make it look better/cleaner aha.