WhisperChoice DC exhaust fan for large rooms with Pick-A-Flow Speed Selector - 1 fan with 2 CFM choices (130 CFM or 150 CFM). Two airflows options 130 CFM or 150 CFM, perfect for large rooms 130 to 150 Sq Ft Quiet fan with less than 0.3 sones at 130 CFM and 0.3 sones at 150 CFM Limited warranty: 6 year warranty for DC motor, 3 year warranty for all other parts Fits in joist size 2 in x 8 in or larger with a 7-3/8 in housing depth 6 in duct collar for optimum airflow and built-in damper reduces back drafting Flex-Z Fast installation bracket for a flexible, fast and easy installation even from below the ceiling UL Listed for over a tub or shower enclosure when GFCI protected ENERGY STAR, HVI-Certified, UL/cUL Listed, California Title 24 compliant and FCC compliant Collection Name: WhisperChoice DC Color Temperature (Kelvins): 0 Fixture Color Family: White Fixture Finish: Matte Manufacturer Color/Finish: White Type: Bathroom ventilator fan Ceiling Cutout Length (Inches): 11 Ceiling Cutout Width (Inches): 11 Duct Size: 6-in Fan Box Height (Inches): 11.85 Fan Box Length (Inches): 16.73 Fan Box Width (Inches): 14.17 Grille Length (Inches): 13 Recommended Room Size (Sq. Feet): 150 Suggested Room Size: 100-149 sq ft Width of Grille (Inches): 13 Air Movement (CFM): 150 Attic Access Needed: No Automatic Shut-Off: No Bulb(s) Included: No Decorative: No Duct-Free: No Fan Sound Level (Sones): Quiet (under 1.5 sones) Fan Speeds: 2 Grille Shape: Square Hub Required: No Humidity Sensor: No Integrated Heater: No Light Options: None Lighted: No Lowe's Exclusive: Yes Motion Sensor: No Mount Location: Ceiling Night Light: No Night Light Maximum Bulb Wattage: 0 No Cut Installation: No Number of Lights: 0 Room Light Maximum Bulb Wattage: 0 Roomside Installation: Yes Sound Level Rating (Sones): 0.3 Speaker Included: No Voice Controlled: No Warranty: 6-year limited App Compatibility: No Bluetooth Compatibility: No Bluetooth Enabled: No Smart Compatible: No Smartphone Enabled: No Wi-Fi Compatibility: No Works with Amazon Alexa: No Works with Android: No Works with Apple HomeKit: No Works with iOS: No Works with SmartThings: No Works with the Google Assistant: No CA Residents: Prop 65 Warning(s): No ENERGY STAR Certified: Yes HVI Certified: Yes Safety Listing: UL safety listing Title 24 Compliant: Yes UNSPSC: 40101600