Air Vent’s award-winning AV9915TRS and AV9930TRS Solar Attic Fans come equipped with the Solar Controller. The Solar Controller intelligently manages the operation of the Solar Fan, is capable of powering the fan after dark, and provides an electronic thermostat and humidistat. The AV9915TRS and AV9930TRS are the retrofit options for larger attic spaces, capable of ventilating up to 1,900 square feet and 2,800 square feet respectively. With commercial-grade construction, severe-weather approval and an optional curb-mounting kit for flat roof applications, the AV9915TRS and AV9930TRS are ideal for residential and light commercial applications. For more information, visit www.airvent.com.