Abstract: A direct-vent, gas fireplace assembly that is configurable into a top venting arrangement and alternately configurable into a rear venting arrangement includes a combustion chamber, an outer enclosure, a vent panel positioned between the combustion chamber and the outer enclosure, and an inlet/outlet subassembly. The combustion chamber utilizes outside air for the gas burner and the combustion by-products are exhausted to the outside by one of the two possible arrangements for the fireplace assembly. The vent panel is set at an approximate 45 degree angle and the inlet/outlet subassembly includes an outlet elbow having an approximate 45 degree bend. The outlet elbow includes a mounting plate that attaches to the vent panel. Depending on the orientation of the outlet elbow as mounted to the vent panel, the fireplace assembly can be configured as a top venting unit or as a rear venting unit.