Top Grower Seedling Heat Mat 20 x 20.75

Top Grower Seedling Heat Mat 20 x 20.75 fits two standard size seedling trays (flats). Heat mats warm the root area 10 to 20 degrees over ambient temperature helping to activate the seedling and spur root growth. Using a heat mat ensures better success in seedlings and cutting (clones). Heat mat is waterproof and easy to clean.