You can get the wire mesh from several sources...Home Depot, Ebay, even fellow CEGers.
The back of the chrome ring has little extensions which portrude thru the backing piece and are melted, to form one unit. You have to get thru/remove the melted part, while retaining those little extensions or post, cause after you are done you'll need to run screws through the bottom piece into those little posts to hold it all together. At least that's how I did mine. Its easy...take your time.
Some people have removed the plastic "mesh" underneath their new wire mesh, while others have not.
