2" PVC Vent Screen for Insects PVS-IS2 Designed to Fit Inside 2-3/8" Vent Termination Hubs 316 Stainless Steel Mesh Screen for Years of Trouble Free Use 6061-T6 Aluminum Shell for Added Strength and Durability Maintains 70% Airflow for Optimal Protection When Insects are Active Complete Professional Grade Rodent and Insect Protection