Marathon Aluminum Large Capacity (LC) Vent 8 Inch

Marathon Large Capacity 8 inch Vent provides pressure equalization in the roof system and is spun from heavy gauge aluminum with inique cap design that shields against entry of wind-blown rain or snow. It is available in either one-way or two-way options. One-way nitrile rubber valve prevents moisture from re-entering roofing systems while the two-way option lacks a valve which will allow both exhaust and convective movement of air between the breathers.