A:Answer Hi Byubeautiful,
Thank you for contacting us. The reason why we say the max amount of weight for a chicken in 5 lbs is because the rotisserie accessory can only hold a weight of up to 5 lbs. It is important to note that the maximum suggested size for anything on the rotisserie spit is 4-5 lbs allowing ample space to rotate within the cabinet. Turkeys are usually much larger and should be cooked on the baking tray, hence why we say a 12 lb turkey is the max. The interior of the Maxx includes the heating element and the fan, which is why the interior is smaller.