Check the listing for details. RadonAway RP145 Radon Fan & Install Kit with Dynameter. Condition: New. Listed at 167.95 USD. RP145 Radon Fan This fan can handle a wide range of situations. It is designed to move large quantities of air with drain tile systems or gravel but also able to produce a maximum of 2.1WC for tighter sub soils. If you can do 2 suction points with tight soils this fan will provide good results with minimal energy usage. Energy efficient at only 37-71 wattsSuper quiet operationELT Listed - for indoor and outdoor useMeets all electrical codesCommercial and residentialThermally protected motor4" inlet and outletRadon Install Kits Radon Install kits come with 2 rubber flex couplings, Dynameter, and a set of system labels to make your system compliant with mitigation standards. White couplings are generally used for outside fan installations because they are UV resistant. Dynameter A must have item for all radon mitigation systems! The Dynameter measures fan performance and serves as a warning indicator in case of fan failure.