Hydrofarm's Windowsill Heat Mat is perfect for veteran growers, beginners, and children too. It is the perfect size for small growing spaces, and improves germination by warming the root area 10-20°F over ambient temperature.
By warming the roots you increase your growing success as this mat will maintain a controlled temperature all season long.
• 3″ x 20″
• UL listed
• Power cord included
• 1 Year Warranty