These fans are designed to work in conjunction with your Breathable Walls to create optimal airflow without letting without letting in light leaks. Breathable Walls are not included with these fans.
Utilize the Breathable Wall in an indoor grow room to replace light-deadening ducting that also decreases airflow. When used indoors, the Breathable Wall can be used to separate rooms into different photoperiods without the need for individual ventilation systems.
Simply install the Breathable Wall in one room on your exhaust fan, separate the rooms with another unit of the Breathable Wall and put one on your intake vent. The exhaust fan will pull the air from one room into the other, reducing the amount of equipment and controllers needed to run multiple rooms. Its rigid flush mount frame makes for easy installation while its available adaptor plate allows for a quick connection to smell cleansing filters.