Jump Start MT10005 Waterproof Durable, 8 Watt UL Certified Seedling Heat Mat, Warm Hydroponic Heating Pad for Indoor Home Gardening & Seed Germination, Measures 6" x 14" Inches Warms root area 10-20F over ambient temperature to improve germination to Increase success of seedlings and cuttings Hydrofarm is the only UL-listed seedling heat mats on the market! 6 foot Power Cord and Waterproof construction 50% thicker construction Lighting, watering, and planting information printed on mat