Duravent Stove Pipe DuraTech Chimney Pipe SS, 5" x 60"

The CF suffix indicates the pipe section ships with additional protective carton filler — foam or padding material — inside the shipping carton, providing extra cushioning around the pipe during transit to reduce the risk of damage to the pipe ends and body. The CF designation is standard for the longer DuraTech pipe sections — 24-inch, 36-inch, 48-inch, and 60-inch — because the greater length of these sections increases the lever arm and moment forces that act on the pipe during handling and shipping, making impact damage to the ends more likely without additional packaging protection compared to the shorter sections. For the 60-inch section, the CF packaging is included as standard in the part number. The carton filler is a shipping protection measure and is removed before installation — it does not affect the pipe's installed specifications or performance.

The 5DT-60SSCF is the most length-efficient section because it delivers the largest installed height contribution per joint connection in the DuraTech 5-inch range. Each joint connection in a DuraTech run involves a 1-1/4 inch overlap deduction and introduces a potential point of moisture infiltration, misalignment, or loosening over time. The 60-inch section delivers approximately 58-3/4 inches of installed height per joint, compared to approximately 46-3/4 inches for the 48-inch section or 34-3/4 inches for the 36-inch section. For long unobstructed vertical runs, using 60-inch sections minimizes the total number of joints required to achieve the planned chimney height, making the installation both more efficient to assemble and more reliable over the long term.

The nominal length of the 5DT-60SSCF is 60 inches. DuraVent specifies that 1-1/4 inches must be subtracted from each joint overlap when calculating the installed length of a DuraTech pipe section. For the 60-inch nominal section, the installed length contribution after the joint overlap deduction at one connection end is approximately 58-3/4 inches per section. This deduction applies at every connection point throughout the chimney run — when planning a chimney installation using multiple 60-inch sections, the cumulative height is calculated by multiplying 58-3/4 inches by the number of sections and then adding the installed length contributions of any shorter sections and fittings included in the run.

Yes. The 5DT-60SSCF can be used in both through-the-roof installations where the chimney passes through the building structure and terminates above the roofline, and in enclosed chimney chase installations where the pipe runs within a framed or masonry enclosure. In through-the-roof applications, the 60-inch sections are most efficient in the straight vertical run between the ceiling support box and the roof flashing. In chase installations, the 2-inch minimum clearance to combustibles must be maintained between the pipe outer wall and the combustible chase framing throughout the full height of the run. The stainless steel outer wall of the 5DT-60SSCF is also noted to be best suited for outdoor or exposed conditions, making it well suited for chase installations that may expose the pipe to outdoor temperature differentials.

The typical approach begins by calculating the total required installed height for the chimney run, then dividing by approximately 58-3/4 inches to determine how many 60-inch sections can be used. Any remaining height after the 60-inch sections are accounted for is then achieved by adding a combination of shorter sections — 48-inch, 36-inch, 24-inch, 12-inch, 9-inch, and 6-inch — whose installed length contributions after joint deductions sum to the remaining required height. The 6-inch 5DT-06SS section provides the finest standard increment for final height adjustment. Working from the longest available sections downward to the shortest minimizes the total number of joints in the run while achieving the precision height needed to meet minimum chimney height code requirements above the roofline.

A complete DuraTech 5-inch installation using the 5DT-60SSCF requires the full system component set: the 5DT-CS24 ceiling support box or 5DT-FRS firestop radiation shield at ceiling and floor penetrations, the 5DT-IS attic insulation shield where the run passes through an attic, a roof flashing matched to the specific roof pitch, the 5DT-SC storm collar at the roof flashing, and a chimney cap at the termination. Shorter pipe sections — 5DT-48SS, 5DT-36SS, 5DT-24SS, 5DT-12SS, 5DT-09SS, and 5DT-06SS — combine with the 60-inch sections to achieve the precise total installed height. Elbow kits 5DT-E15KSS or 5DT-E30KSS are used where structural offsets are required. All components must remain within the DuraTech 5-inch system family.