I picked up a cage today that I though was a double ferret nation from the way it looked in the ad. It has pretty much the same design but the parts are screwed together rather than having pegs that just slide into place. The shelves are also a lot different but better in my opinion. I was wondering if maybe this is a knock off or a previous model of the ferret nation? It's not a bad cage since I really needed something that opened up completely in the front, but it was a nightmare to get apart to clean it and I basically stripped or broke a lot of the screws so I replaced the ones that I could get out. Wasn't a bad deal for $100, just wish it went together the same way as my other DFN.