Standard 300mm Size Perfectly sized to fit and cover **300mm (12 inch)** industrial and domestic exhaust fan openings and duct outlets. 300mm / 12 Inch
????️ Superior Weather Protection Designed with **angled fixed louvers** (blades) to effectively shield the fan opening against rain, snow, and severe weather intrusion. ????️ Heavy-Duty Construction Typically built from **durable galvanized steel (G.I.) or high-grade aluminum** to ensure maximum resistance to rust, corrosion, and UV damage. ???? Pest and Debris Barrier Acts as a physical barrier, preventing birds, rodents, large insects, and general outdoor debris from entering the ventilation system. ????️ Permanent, Secure Fixture Designed for **external wall or roof mounting**, providing a sturdy and permanent protective fixture for exhaust fan terminals. ???? Low Airflow Restriction The angled louver design is optimized to provide maximum weather protection while offering **minimal resistance to exhaust airflow**. ????️ Simple Installation Comes with **pre-drilled mounting holes** for quick and easy screw-fixing to the exterior wall surrounding the exhaust opening.