Need more room? Add-A-Tray+ Accessory Packs add 2 extra trays to expand your dehydrator s capacity. Perfect for drying more beef jerky with our famous jerky seasonings! For use with models FD-20 FD-30 FD-40 FD-50 and FD-60 only. Please check your model number before ordering. Other Add-A-Trays+ available for other models...see selection. Expand your dehydrator as your needs grow with accessory trays. FD-20 and FD-40 expand up to a maximum of 8 trays. FD-30 FD-50 and FD-60 expand up to a maximum of 12 trays. No tray rotation necessary. Set of Two.