This deluxe model includes a fully installed Circulated Air Fan Kit. The Fan Kit improves egg hatching conditions by circulating a constant flow of warm air throughout the incubator. Holds up to 30 eggs. Features two 4" x 8" viewing windows - ideal for educational purposes - and solid state thermostat control, thermometer, and moisture rings. EGG TURNER SOLD SEPARATELY. L 17.75" x W 17.75" x H 8"