Anybody know where I can get this part or a furnace?

[Phillip Syrios]

I am trying to get a furnace cover for a product that is no longer manufactured. I want to get this one here http://www.repairclinic.com/PartDetail/Access-Panel/2339574

Its not the exact piece for the furnace, but every online store I find it at I get an email from them saying the order is cancelled because they don't have one.

This is the actual piece that fits the furnace I have but it doesn't have a picture and I think it would be harder to find.

Vest access panel (champagne) S1-07319862031 http://www.repairclinic.com/PartDetail/Vest-Access-Panel-Champagne/2339573