Sunforce Solar-Powered Vent: * Solar powered * Silent and secure ventilation * Works in all weather conditions * Solar option for daytime usage * Easy to install * Wire free * Air in/out * On/Off switch * No running cost * Can be installed in polycarbonate, glass, wood and metal * Easy to install * Dimensions: 9.5"L x 9.5"W x 3.5"H * Weight: 1.6 lbs. * Model# 81100