The bio chef dehydrator features a stainless steel casing, removable high-quality 304 food-grade stainless steel trays, and a stainless steel heating element, ensuring your food never has to come in contact with any harmful, BPA-leaching materials. The superhero of the dehydrator range. The heating element, fan, and air vents work together to circulate air and remove moisture. This horizontal drying system dries all trays evenly both front and back, resulting in the most consistently dried food without rotating any trays.