Tent fan attaches to poles 18" and has 3 speeds available. The Indoor/Outdoor POW fan from J&D Manufacturing is a durable, three-speed, waterproof fan. This fan comes pre-wired with a 115 volt plug and 8’ cord for instant operation. J&D Manufacturing’s line of premium outdoor waterproof fans are perfect for greenhouses, marinas, outdoor loading docks, patios, amusement parks, and wash bays where fans may come in contact with rain and humidity. Our UL507 fans can be sprayed down to remove dust and dirt build up, making them an excellent choice for agricultural applications.