The Super Sprouter® Seedling Heat Mat is designed to help growers have better success rates with seedlings and cuttings. More than 20% larger than competitive mats, it perfectly accommodates one standard 1020 propagation tray allowing for even warming of the entire tray. The mat warms the rooting area approximately 10 to 20 degrees Fahrenheit over ambient temperatures to improve the germination process. With heavy-duty construction for durability, it provides more consistent heating with fewer hot spots than other seedling heat mats on the market.