Holds extra large eggs: Turkey, Duck, Jumbo Chicken, etc. Each of the No. 1502 incubators trays will hold 2 egg racks (60 eggs) for a total of 180 eggs per incubator. -Plastic egg rack positioners offer the most effcient system for gathering, spray disinfectant treating and storing of eggs. At a time of setting eggs, just remove loaded egg rack positioners from storage area to the incubator setting trays.