Festa Fans are field-tested and reliable for long-lasting life and their motor is thermally protected and energy efficient. The fans can be easily mounted indoors or outdoors. Premium Construction with Trusted Material The AMG fans have the best quality components that maintain their color & appearance. These super-duty and highly engineered fans are designed to run continuously. Applicable for Various Scenarios The AMG Surge ECS is recommended for moderate sized homes and structures with footprints between 500 and 2,500 square feet that are built upon compact sub-slabs such as clay or soil. They can also be used for multiple suction points and/or double stacking. This fan is 100% speed controllable with a built in speed potentiometer located in the wiring box. It meets all electrical code requirements. Specifications AMG Surge ECS Fan Coupler Diameter: 3” Electric Fan Design: Inline Fan Material: Glass-reinforced poly-resin Power Source Type: Corded Electric Max Flow: 185 CFM & Max Pressure: 3.4” w.g. Dimensions: 12 1/16” (L) x 12 1/16” (W) x 9 1/4” (H) Volts: 115v 60hz, Wattage: 110 watts, Max Amps: 1.45 Speed: 3602 rpm Item Weight: 10 pounds What's in the Box AMG Radon Fan Installation Manual (PDF) Specification Sheet (PDF)