Slideclip Grille: Patent Pending Technology For A Springless Attachment That Allows For Fast Installation Of The Grille/Cover And Easy Cleaning. less Design For Easy Cleaning: Modern Cleancover Grille Blends Into The Ceiling And Allows For Quick, Easy Cleaning. . Energy Star 4.1: Reduces Energy Consumption By Over 50% Compared To Standard Bath Fans. Compliant: Engineered For Energy Star 4.1 Meets Building Codes And Reduces Call-Backs. . Quiet Operation: Sound As Quiet As A Whisper (0.9 Sones) With Efficient Ventilation For Rooms Up To 45 Sq. Ft. Durable Led Light: Long-Lasting, Integrated Led Light Is Rated For 50,000 Hours Of Life At A 3500k Color Temperature. Light Is Dimmable With The Compatible Wall Control (Sold Separately). Ezduct Connector: Patented Technology Provides Superior Airflow And Creates An Airtight Seal From Inside The Housing. Housing Fits The Most Common Fan Size Opening, 7.5 x 7.25. Mfg #BEL6