VentCool offers three ventilation fans with a high end CFM range of 6000 to 7000 CFM. The Summit 4.9  and the Tahoe T6 whole house fans feature an AirLoc™ Gravity Damper. The Vista 5.0 whole house fan uses a PowerSeal R-49 insulated motorized damper. All whole house fan models feature multiple speeds and timers.

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