These 12-3/4-inch screens (a set of two) can be inserted into the trays of Nesco American Harvest"s FD-28JX, FD-35, FD-37, FD-39, FD-40, FD-50, FD-60, FD-61, FD-75A, FD-75PR food dehydrators to prevent foods such as sugary fruits from sticking during the drying process. The fine-mesh screens are flexible, so they can be curled and foods simply peeled off. The screens are also useful for preventing small items such as herbs and spices from falling through the dehydrators" trays. As a bonus, they"re dishwasher-safe.