If you want to order the sheet metal ready to go, it makes a really easy project even easier. Send Cut Send let me save the two piece sheet metal shopping cart in a public way so you can order it directly from them. https://admin.sendcutsend.com/admin#/carts?ids=25726 The only parts you need to complete the project is an 80mm USB powered fan (if you want the cooling), Keystone modules to meet your desires and 4 (or 6) 1/8" Pop-Rivets (or 6-32/3mm screws and nuts) to attach the Keystone bracket to the back of the rack mounting plate. I found SendCutSend.com would make these parts in the small quantity I wanted and reliably did a good job. I'm not affiliated with them in any way and I do not receive any consideration from them, I just found them a good vendor for this and I'm passing that info along. The 2 parts cost a total of about $65 US, laser cut, bent and shipped in the US.