Empire Loft 36" Millivolt Control With On/Off Switch, Natural Gas Direct Vent Linear Fireplace modern Fits models GSF-DGH and GSF-DGHSS

Fits models GSF-DGH and GSF-DGHSS

Quite often these are two completely different yet complementary systems that work hand in hand

improper storage

This particular FlexDuct is 4" (100 mm) in diameter

Empire Loft 36" Millivolt Control With On/Off Switch, Natural Gas Direct Vent Linear Fireplace modern Fits models GSF-DGH and GSF-DGHSSA Direct Vent system uses two vent pipes. One draws air in from outdoors to support combustion. The other exhausts the by products of combustion to the outside. The two vent pipes may be concentric (exhaust pipe within a larger diameter intake pipe) or co linear (separate pipes of about the same size). Combustion takes place inside a sealed chamber with a glass front in the case of a fireplace. Room air circulates around the combustion chamber, often