I purchased these for a customer cuz they were rated for outdoor and said it would make a nine foot blanket of heat I found that they were a little less than 4 feet maybe so we pointed two of them at each other to cover the area we need heated outdoors we ran two dedicated 20 amp circuits the power of the units into a plug GFCI protected in a waterproof box the customer is very happy and I was happy for the price would purchase these again in the future and recommended for similar applications