Need Extra room to grow? This Mini-Greenhouse growing system offers increased growing success by providing gentle warmth to the planting bed and controlling humidity. The 6.5" dome is excellent for taller starts and cuttings. Comes complete with a UL listed, waterproof, seedling heat mat (17w/120volt), 6.5" humidity dome with2 ventilation points, 11"x22" waterproof base tray, 72-cell seedling insert an instructions with growing tips. #CK64060