Fresh 20+ Direct Vent Gas Fireplace Exhaust Pipe
Fresh 20+ Direct Vent Gas Fireplace Exhaust Pipe. While most gas fireplace inserts need to exhaust fumes through the chimney, a direct vent fireplace uses a sealed chamber to draw in fresh air and expel exhaust through a specialized pipe that exits the. A direct vent gas boiler is a unit that includes a closed horizontal piping system that goes through a side wall right to the outside for exhaust and intake air.