Heavy-duty PVC to resist spills and soil while durable to last for years 10" x 20.75" to perfectly fit our Universal Bottom Tray and any 1020 tray Uses an energy-efficient 20W of power, increasing soil temps by 10-20 degrees Fahrenheit Bottom heat speeds up germination, increases plant growth, and raises the chances of success This Epic Seed Starting Heat Mat is a must for heat-loving plants such as peppers, eggplants, and tomatoes. Easy to use - simply roll the mat out, place your seed trays on top, and plug into a standard outlet. Pair with our Epic Germination Domes to create the perfect microclimate for your seedlings.