Discover the ultimate 12 in. Brewing and Fermentation Heating Pad. With a power of 25W, this heated mat is designed to revolutionize your home - brewing experience. Measuring 12 x 12 x 1.6 in. and weighing 3 lbs., it is crafted with a waterproof surface, making it durable and easy to clean. The mat can raise the fermentation temperature 5–20°F above room temperature, ensuring your dough, yogurt, beer, and kombucha ferment perfectly. It features a built - in safety mechanism that automatically shuts off when the temperature exceeds 105°F. With no need for a thermostat, simply plug it into a 100–120V outlet for a steady heat source. To maximize efficiency, you can add insulation around the vessel and use spacers. Ideal for home - brewing enthusiasts, this heating pad guarantees consistent results with less hassle, making your brewing projects a breeze. Size: extra large.