Installed against the external wall of the building - terminating at least 600mm above eaves level, or installed free standing in the surrounding ground away from the building

Riser pipe is between 110mm - 240mm diameter dependent on flow volume and rate required. Manufactured out of Plastic, Galvanised or Stainless Steel pipe.

Venting increases volumes through flow creating passive draw-through of gas ventilation system from below the building.

Connection on one side of perimeter with inlet of air through system-static alternative inlet units (i.e. bollards, air bricks).

Also supplied with anti-vandal cage on exposed sites.