Portals Plus 71028 Aluminum 1-Way Vent

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 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 74004 and 74044 are large 2-way aluminum breathers designed to relieve moisture vapor and equalize air pressure in commercial roof systems. They feature heavy-gauge spun aluminum construction (.060″ gauge) with a base flange diameter of 11.5″ and a stand-pipe opening of 6.5″. The units include a locking, vandal-proof rain cap and are packaged in cases of four. Installation spacing is recommended at one unit per 1,500 square feet. Key features: Heavy-gauge spun aluminum body...

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...