Air King FRAK80 Deluxe Quiet 4 Inch Duct Fire Rated Exhaust Fan. When fire codes need to be met, Air King's Fire Rated Series Exhaust Fans are the perfect solution.

The Fire Rated Exhaust Fan Series is designed to automatically shut off and seal the duct from the rest of the dwelling once the temperature of the air passing through the damper exceeds that of the fusible link. These fans meet the NFPA (National Fire Protection Association) Standard 90A and the Ceiling Radiation Damper is ULC Classified and rated for 3-4 hour fire resistance.

• 80 CFM @ 1.5 Sones
• Meets NFPA (National Fire Protection Association) Standard 90A
• Ceiling Radiation Damper is ULC Classified and rated for 3-4 hour fire resistance

• Damper Frame = Roll Formed 22 ga. galvanized steel
• Blanket = Non-asbestos, ceramic blanket
• Fusible Link = Replaceable 165 degree Standard
• Damper Finish=Mill galvanized
• Classification = Ceiling Radiation Damper is ULC classified and rated for a 3-4 hour fire resistance. UL Listed 555C. California State Marshall classification for 1 or 2 hour fire damper rating. California State Marshall listing number 3225-1374-101
• Housing Dimensions = 10 3/4" x 9 1/4" x 7 7/8" Galvanized steel 24 GA thick
• Exhaust Ducting Connection = Metal 4" Round
• Grill Dimensions = Metal 12 15/16" x10 5/16"