Single Arm Side of Pole Mount model # UNI-SA/21.5 for small solar panels. Wind Rating: 125 mph for modules up to 40 watt. Generally used in applications related to remote surveillance, repeating transmitters for the telecommunications industry, stand-alone lighting, property gating installations, wi-fi canopy transmitters, and other remote and low maintenance job sites. Standard stainless steel clamps are adjustable within a range of pole sizes from diameters of 2" to 4.5" inches. The UNI-SA/21.5 can accommodate panels with an inside extrusion dimension of between 12.6" and 21.1". 10 year warranty