Ensure your semi is Ready for the Road Ahead with enhanced ventilation, with the Fleet Engineers 17" x 11-3/8" Aluminum G1 Dry Freight Vent Door. With a strong aluminum frame, this replacement door is the ideal option to help maintain airflow into a vehicle. Fashioned with an anti-intrusion screen to keep out animals, insects, and contaminants. FleetPride is your First Click in Heavy Duty.