The Tank Vent Brick is designed as a terminal for vent lines from storage tanks when the line is run inside the building walls.  Such lines are hidden from view and must be protected from damage or vandalism in a manner which does not infringe upon property lines. The face of the Tank Vent Brick is the same as two stacked standard masonry bricks and blends into all types of wall construction.The Tank Vent Bricks are made of a one-piece aluminum casting, weigh three pounds and are available with screwed connections to accept either 2" or 3" or 4" pipe.