The FCC813i Cylinder is a high output cylinder that delivers 5000 Lumens. That is to say, the expert engineers at our U.S. manufacturing facility designed it for high performance. Too, it’s UL and ETL listed for dry location use in the down position only. Most noteworthy is the open grille on the inner cylinder at both ends of the fixture. For this reason, there’s increased airflow. Furthermore, the mesh grille provides a unique ventilation system for efficient heat dissipation. Therefore, ensuring the advanced LED engine will have a long operating life.