Extreme High cycle grilles offer heavy duty, commercial grade security for high-traffic locations where remote access is required. This particular model is an elevated (motor operated) version of the AT-9 HC which is strengthened by additional sleeves and axel nuts on rods, zinc plated copper eyelets, deeper guides, and a full width top slat for optimal connection to the barrel assembly. Reaping the same airflow and visibility benefits of our high cycle grille, this model also provides a significantly increased cycle life (250k) for parking structure applications with over 50 parking spaces or tenants.