Up To Date 21+ Gas Fireplace Vent Pipe
Up To Date 21+ Gas Fireplace Vent Pipe. Vented gas logs can take the place of wood in a traditional hearth and chimney if you choose a unit that burns either natural or propane gas. Gas fireplaces come in three types: Because hot flue gases are buoyant, the exhaust air moves naturally through its own pipe system, upward through your roof, where it is carried out the chimney and safely away from.