Vented Gas Logs

Gas log sets consist of refractory, ceramic, or ceramic
fiber manufactured logs placed according to manufacturer's instructions
over a gas burner and a metal pan typically containing fine sand (natural
gas burners) or vermiculite (propane burners).
Vented gas logs sets must be installed in a working masonry
or factory-built solid fuel fireplace with adequate draft. Since the
damper must be at least partially open permanently, (varies with jurisdictions:
the damper may have to be open fully or removed), vented gas logs sets
have some of the efficiency characteristics of the open woodburning
fireplace. Customers seeking substantial heat and/or efficiency or seeking
to cure existing draft problems should be guided to other choices.