OMG 2 Way Aluminum Vent

• Install this Standard Aluminum Breather Vent at a spacing of one per 1000 square feet. 
• Made of .050 spun aluminum with a base flange diameter of 12" and a height of no less than 9". 
• The stand pipe has 4.25" base opening and a 2.75"counter flashing rain cap, the latter locking and vandal proof.