This Commercial Electric ultra quiet bathroom exhaust fan features a square grill design. This ventilation fan is quiet at 1.0 Sone, ENERGY STAR qualified 50 CFM fan, making it perfect for your small room areas. Ease of installation with the room side design for spaces with no attic access and quick template for drywall applications. Features a patented unique clip lock installation system attaching the bath fan securely to your ceiling dry wall.