If an AL3 or AL6 airflow measuring louver fails to operate within its specifications, replace the unit. For a replacement AL3 or AL6 airflow measuring louver, contact the nearest Johnson Controls® representative.
All Johnson Controls® AL3 or AL6 airflow measuring louvers are built to order and cannot be returned due to ordering errors. All AL3 or AL6 airflow measuring louvers are backed by a 3-year warranty, which covers defects in materials or workmanship. Refer to terms and conditions of sale for specifics.