HIGH QUALITY DESIGN: Crafted to perfectly fit all Harvest Right tray sizes, our innovative corner structure ensures maximum stability. Made from durable, food-safe HDPE plastic, our stackers maintain their integrity even in the coldest temperatures, ensuring no bending or breaking. PROUDLY MADE IN THE USA: Designed and manufactured in Utah to make your freeze-drying experience easier and more enjoyable. FOOD-GRADE PLASTIC: Injection-molded, high quality HDPE plastic will not get brittle when frozen, dishwasher safe, and extremely durable. DESIGNED FOR HARVEST RIGHT FREEZE DRYER TRAYS: These stackers will fit the Harvest Right Freeze Dryer trays. They MAY work for other brands, but tray design varies by manufacturer and fit is not guaranteed. 16 PIECE SET: Includes 16 green tray stackers which will stack 5 Harvest Right Freeze Dryer trays. After prepping your food, easily carry the entire stack of trays to your freeze dryer or pre-freeze without trays sliding all over the place. The ORIGINAL high-quality stackers for your Harvest Right Freeze dryer trays (fits all size trays). High quality HDPE plastic is food-grade, dishwasher safe, and won't bend or break (even at freezing temperatures). Designed and made in the USA, these stackers make preparing your freeze-dried food easier and helps save space in your freezer or on your counter. Fits all small, medium, large, and XL Harvest Right trays. Small Set (stacks 4 trays - 12 pieces). Medium Set (stack 5 trays - 16 pieces). Large Set (stacks 6 trays - 20 pieces). X-Large Set (stacks 7 trays - 24 pieces). Will only fit Harvest Right brand freeze dryer trays. Trays are not included.