Duravent Stove Pipe DuraTech Anchor Plate, 5"

The 5DT-AP anchor plate serves as the mechanical starting connection point between the DuraTech 5-inch chimney system and a zero-clearance or masonry fireplace. Fireplaces — unlike free-standing stoves — have a flue collar at the top of the firebox that the chimney must connect to from above rather than from a stovepipe outlet at the appliance's side or top. The anchor plate mounts at this flue collar location and provides the structural connection and dimensional transition that allows the DuraTech pipe sections above to connect correctly into the fireplace. Without the anchor plate, the DuraTech pipe would have no approved means of mechanically connecting to the fireplace flue collar at the starting point of the chimney run, and the connection between the fireplace and the chimney would not meet the dimensional or structural requirements of the DuraTech system installation specifications.

Zero-clearance fireplaces are factory-built appliances that have been tested and listed with specific chimney systems — each fireplace model is certified with one or more approved chimney systems specified in its installation documentation. Not all zero-clearance fireplaces are approved for use with DuraTech Class A chimney — some may be listed exclusively with a proprietary chimney system or with a different Class A system. Installing a DuraTech chimney with a zero-clearance fireplace that has not been approved for that combination voids the fireplace's listing, potentially voids its warranty, and may create a safety hazard because the system has not been tested together. Confirming with the zero-clearance fireplace manufacturer that DuraTech is an approved installation method — and that the specific pipe diameter is correct — is a required step before proceeding with the installation.

The 5DT-AP is the standard anchor plate that provides the structural connection between the DuraTech chimney and the fireplace flue collar, without any additional damper mechanism. The DT-L-APD is an anchor plate variant that includes an integrated damper section — the damper allows the chimney to be closed when the fireplace is not in use, blocking cold drafts from entering the firebox through the open flue. The DT-L-APD bolts directly to the fireplace flue outlet and includes a chain and lintel hook for operating the damper. The DT-L-APD is the preferred choice when a closeable damper at the fireplace-to-chimney connection is desired — particularly in installations where the fireplace does not have its own built-in damper at the firebox throat, or where an additional damper at the chimney connection level provides a more complete draft seal when the fireplace is out of service.

Yes. The 5DT-AP is confirmed for use with both masonry fireplaces and zero-clearance factory-built fireplaces, though the approval requirements and installation approach differ between the two types. For masonry fireplace applications, the anchor plate bolts directly to the masonry fireplace flue outlet, providing the mechanical transition from the masonry flue collar into the DuraTech chimney above. For zero-clearance fireplace applications, compatibility with the specific fireplace model must be confirmed with the zero-clearance fireplace manufacturer before installation, as described above. In both cases the anchor plate provides the same fundamental function — the approved starting connection point from which the DuraTech chimney run begins its vertical rise to the roof termination.

Anchor plates are specifically designed for fireplace installations — wood stove and other appliance installations that use a stovepipe connector from the appliance to the ceiling support box do not use an anchor plate. In a typical wood stove DuraTech installation, the appliance's flue collar connects to DVL or DuraBlack connector stovepipe, which then connects to the ceiling support box below the ceiling, and the DuraTech chimney sections begin at the top of the support box above the ceiling level. The anchor plate replaces this entire lower portion of the installation when the appliance is a fireplace — the anchor plate connects directly to the fireplace flue collar and the DuraTech sections begin from the anchor plate, with the ceiling support box higher in the chimney run managing the ceiling penetration and structural support above.

A complete DuraTech 5-inch fireplace installation using the 5DT-AP anchor plate begins at the anchor plate and builds the chimney run upward through straight pipe sections — combinations of the 5DT-06SS through 5DT-60SSCF sections in lengths calculated to achieve the required total installed height. The 5DT-CS24 ceiling support box or 5DT-FRS firestop radiation shield manages ceiling and floor penetrations above the anchor plate level. The 5DT-IS attic insulation shield is required if the run passes through an attic. A roof flashing matched to the roof pitch, the 5DT-SC storm collar, and a chimney cap complete the exterior termination. Elbow kits may be required if the run needs any offset routing. The 5DT-LB locking band is an optional supplementary joint security accessory that may be used at any joint in the run above the anchor plate.