Empire Innsbrook 31" Medium Direct Vent Clean Face Millivolt Control, Natural Gas Traditional Fireplace Insert Ignition Type:. the maximum number of BTU’s

the maximum number of BTU’s for vent-free is 40

Empire Carol Rose 42” Bi-Fold Glass Door with Stainless Steel Frame helps keep leaves and debris out of your fireplace when it's not in use

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OPTIONS AND ACCESSORIES

Architect Guide

Empire Innsbrook 31" Medium Direct Vent Clean Face Millivolt Control, Natural Gas Traditional Fireplace Insert Ignition Type:. the maximum number of BTU’sA 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