SELF-CLOSING LOUVERED GRILLE

Made of ABS with UV protection. This type of exhaust grille prevents air from flowing back into ducting and thus areas from which it was extracted. These can be used with forced air extraction installations, such as Ventokit, and other air extraction systems. These are placed usually at the exit of ducting through a wall. NOTE: These must be installed in a vertical position, with the louvers opening upwards (Vs. downwards or sideways) and are not to be used as an air intake, as louvers will remain closed and block any airflow. These are helpful in preventing ingress of flies and small bugs into the system should not be used for passive ventilation systems.
Sizes available: 6" x 6" and 7.4" x 7.4".