I've been posting questions in the APO topic and the Food Dehydration topic, so I thought to join them together. Here's some history of various discussions:   Now I have a total of 5 racks for my APO: 2 original and 3 are Hamilton Houseware's 12" x 17" cooking racks which fit the APO perfectly (a recommendation from @palo who said "They fit perfectly, smoothly slide in and out of the grooves and are rigid enough that there is no concern of them popping out of the grooves").  Via Amazon