The Osburn Fresh Air Intake Register with Airtight Damper, part number AC01349, is a 5-inch diameter fresh air intake register with airtight damper for use with Osburn wood stoves, inserts, and fireplaces certified with a 5-inch fresh air intake kit. The register is the wall-mounted termination fitting of the fresh air intake system that is visible from inside the installation space, providing a controlled opening point where outside combustion air enters the fresh air intake pipe that supplies the heating appliance.
The airtight damper within the register can be closed completely when the heating appliance is not in operation, preventing cold outside air from flowing back through the fresh air intake pipe into the installation space and reducing unwanted heat loss through the intake system during non-operation periods.
Fresh air intake systems supply dedicated outside combustion air directly to the heating appliance, drawing air from outside the building structure rather than from the room air within the installation space. This is required or recommended in tightly constructed homes where the building envelope does not provide sufficient natural air infiltration to supply adequate combustion air to the heating appliance, and is required in some jurisdictions by local building code for certain wood stove and insert installations.
The AC01349 register is constructed of steel for durability and includes a built-in positioning shim that allows precise installation adjustment based on the wall thickness at the installation point, ensuring the register face sits flush and correctly positioned at the wall surface regardless of the specific wall construction depth. The simple lever or plate damper mechanism within the register requires no tools to operate and allows the damper to be opened before lighting the appliance and closed after it has been fully extinguished and cooled.
What's Included: One Osburn AC01349 5-inch diameter fresh air intake register with airtight damper.
Installation Limits: The AC01349 is sized for use with 5-inch fresh air intake kits only. All fresh air intake installation must comply with local building codes and all applicable standards governing combustion air supply for wood and pellet heating appliances. All installation must follow the Osburn AC01349 installation instructions and the owner's manual for the specific heating appliance being served.
Compatibility: Compatible with Osburn wood stoves, inserts, and fireplaces certified with a 5-inch fresh air intake kit.
