Anchor / installed
Gas Fireplace Insert — Direct-Vent Sealed Combustion
A sealed direct-vent appliance installed into an existing masonry firebox, taking combustion air from outside and venting to outside through a coaxial system. From a standards view the significant word is sealed: room air is not consumed and combustion products do not enter the room, which is what separates this from a log set. It is a listed appliance installed to its own instructions, and those instructions govern the venting run, the clearances, and the terminations — not the original chimney's dimensions.
Venting: Direct-vent, sealed combustionStore fit: Install-only, full retrofit
