This Panasonic WhisperGreen™ fan is designed to provide both bathroom exhaust and whole house ventilation. The high speed is fixed at 130 cfm for bathroom exhaust, with the low speed adjustable from 0 to 110 cfm allowing you to establish the desired level of continuous exhaust for whole house ventilation. It has a high speed extended run delay adjustment so the high speed boost will run long enough to exhaust moisture after a shower. This fan also features Panasonic's SmartFlow™ Optimum CFM Technology to ensure the fan performs at a constant CFM regardless of elbows and other factors in the exhaust line, and a permanently lubricated motor designed for extremely quiet, energy-efficient operation.
