Standard Aluminum Vent

  • Furnish and install Portals Plus Standard Aluminum Vent as manufactured by PortalsPlus, Inc., Grand Rapids, MI at a spacing of one per 1000 square feet. 
  • The Aluminum Vent shall be made of .050 spun aluminum with a base flange diameter of 12" and a height of no less than 9". 
  • The stand pipe will have a 4.25" base opening and a 2.75"vcounter flashing rain cap that will be a locking, vandal proof type.