e e ALUMINUM MINI LOUVERS TARSI O M, & Mini Louvers are used to seal existing rafter/bird block vent holes to maximize airflow while protecting against rodent and insect invasion. if there are no per-existing bird block holes, use a hole saw drill bit to cut holes to the nominal size of the Mini Louver Vent: 2, 3or 4 inch. Lightly tap in the vents to pressure fit. A Stem diameter B: Face diameter C: Stem depth A 8 ¢ NEVI MLM2MF 188" 231" 05° 047 MLM3IMF: 288" 3.50" 0.83" 1.
