Portals Plus 71028 Aluminum 1-Way Vent

The Portals Plus 72018 1-Way Black Plastic Vent is designed to allow moisture vapor to escape from roof systems and prevent moisture from re-entering the system. Built of high-density polyethylene (HDPE) in black, the unit features a base flange diameter of 10.5″ and height of 7.75″, with a stand-pipe 5.5″ base opening and a 2.5″ counter-flashing rain cap with locking, vandal-proof design. The vent is specified at a spacing of approximately one unit per 1,000 sq ft of roof area. Key features:...

The Portals Plus Large Aluminum 1-Way Vent provides a high-capacity roof system venting solution designed to relieve trapped moisture and air pressure in large roof areas. Constructed of heavy-gauge .060″ spun aluminum with abase flange diameter of 11.5″ and a minimum height of 11″, it features a 6.5″ stand-pipe base opening and a 4.5″ counter-flashing locking, vandal-proof rain cap. It is specified for use at approximately one unit per 1,500 square feet of roof area (retailers ship in cases...

The Marathon MC Vent (BV-10156 for One Way, BV-10157 for Two Way) is a medium-capacity aluminum roof vent designed to provide pressure equalization while shielding against wind-blown rain or snow. Spun from heavy gauge aluminum, it features a security cap and an optional foam insert to minimize condensation. With a wide 12-inch flange and a base opening of 6-1/2″, this vent offers reliable performance in roof ventilation applications. Key Features: One-way (BV-10156) or two-way (BV-10157)...

The Portals Plus 71008 Aluminum 2-Way Breather allows for both exhaust and convective movement of air between breathers, helping relieve moisture vapor and equalize air pressure in roof systems. Constructed from heavy-gauge .050″ spun aluminum with a 12″ base flange and 9″ height, it includes a locking, vandal-proof rain cap to protect against intrusion of wind-blown rain or snow. Recommended for installation at approximately one per 1,000 sq ft. Key features: Heavy-gauge .050″ spun aluminum...