Features: * Grow bigger and taller starts * Increase germination success * Better humidity control for optimum growth * Instructions with growing tips * Seed starting booster * UL listed waterproof heat mat, 17 watts, 120 volt * 6-inch humidity dome * 11-in. x 22-in. watertight base tray * 72 cell seedling inserts What"s In The Box: * Hydrofarm CK64060 6-Inch Hot House with Heat Mat and Tray