The AFF stands for American Frozen Foods, it is kind of a club I guess where you join and then you get meat at club prices and the grill is part of the deal I don't think it is free but I guess you get it at a discount. I got the grill from my friends so I don't know all the particulars. Other than the distinctive blue top I am not sure what makes it different than other grills, the owners guide they gave me with this grill says it is a 3000 series, I noticed the picture on the front of the manual only has the left swing up table so maybe that is the difference. Also AFF is still in business, you can look at their website if you like. hope this helps.
Ed Greenwell