The MaxxFan 4-Speed Vent Fan has a powerful 12-volt, 4-speed sealed ball bearing motor that moves air out of your RV for fast, efficient ventilation. This fan is easy to operate with convenient ceiling keypad controls and manual-opening low-profile smoke lid. Patented rain shield protects your RV's interior in any weather.• Provides over 900 CFM to keep you cool and comfortable• Easy-to-operate ceiling keypad controls• Manual-opening low-profile lid• Twin lid-lifting arms help prevent lid flutter in high winds or when driving• Measures 23"L x 16.4"W x 5"H closed (9.3"H opened)• Fits standard 14 x 14 vent openings Manual-opening, low-profile smoke lid Patented rain shield protects your RV's interior Fits standard 14"" x 14"" vent opening | Maxxair MaxxFan Deluxe RV Ventilator System, Manual, Exhaust Only, Smoke Lid in Black