Features: Sold as Qty. 6 50 CFM output quickly clears your bathroom of moisture Integrated LED lighting brightly illuminates your bathroom Ventilates rooms up to 50 sq. ft. Covered under a 4 year limited manufacturer warranty Specifications: CFM: 50 Sones: 3.4 Duct Size: 4" Round Grille Width: 8-3/4" Grille Length: 9-1/8" Housing Width: 7-1/4" Housing Length: 7-1/2" Housing Depth: 3-5/8"