Jiffy Hydro Seedling Heat Mat, 10 x 20 in. is designed to give your seedlings a quick start in the growing process by providing gentle warmth to the root area. This heating mat helps speed up germination and promotes healthier seedling growth by creating an i environment under your seeding trays. for indoor use, it measures 10 by 20 inches and operates at 17.5 watts, making it an efficient and reliable choice for gardeners looking to improve their plant propagation success. Model Number: