SunPad Seedling Heat Mats are perfect for every gardener from beginners to professionals. They reliably warm the root zone to 10degF - 20degF above ambient air temperature, creating excellent rooting conditions for seedlings and cuttings. When used with a temperature controller and tray domes, growers can dial in ideal temperature and humidity. The mats' patented double-layer construction is tough and waterproof, which makes them ideal for greenhouses, nurseries, and commercial operations. Use with a temperature controllerto get the best possible control of temperature and humidity, ensuring great success with rooting of cuttings, seed germination, and seedling propagation. | SunPack Seedling Root Heat Mat