Campbell Scientific now offers a 20' tower; you'll find it in the Tripods and Towers section of our US and International Price Lists. The UT20 is a strong, lightweight aluminum tower produced by Universal Manufacturing, the same company that manufactures our 10' and 30' towers.
Commonly used for fire weather stations, the UT20 is intended for permanent installation. It is compatible with all UT30 mounting options including bases, guy kit, and sensor mounting hardware.