Features: Features a powerful 80 CFM permanently lubricated and sealed motor thats specifically designed for continuous use applications Damper mounts directly to compatible fan models (Nutone HD50NT, HD80NT, 676NT, 684NT and Broan HD50, HD80, 676, 684) Compatible with a number of Broan multi-function and time control wall switches (sold separately) Not recommended for use over bathtubs and showersProduct Technologies: Radon Mitigating: This fan was specifically designed to safely remove Radon, which is a by-product of Uranium or Thorium decay, which has several notable, associated health risks. This fan will remove any Radon that is present within the installed room, ensuring the air is safe and of breathing quality. Specifications: CFM: 80 Sones: 2.5 Duct Size: 4 Inch Round Grill Width: 11.625 Inches Grill Length: 9.5 Inches Housing Width: 8 Inches Housing Length: 10 Inches Housing Depth: 3 Inches HVI Certified: Yes UL Listed: No Light Included: NoProduct Variations: 110RDB: 110 CFM 80RDB (This Model): 80 CFM HD80RDB (This Model): 80 CFM, Heavy Duty Also known as
