Duravent Stove Pipe DVP 24" Pipe Length (galvanized) 5" x 8"

The 58DVA-24 is typically the right choice when a vent run requires a two-foot nominal increment that would be inefficient to build from multiple 12-inch sections and where a 36-inch section would overshoot the remaining required length. In practical vent run planning, the installer first calculates the total required installed length, then allocates the longest available sections — 60-inch, 48-inch, or 36-inch — to cover as much of the run as possible with the fewest joints, then uses the 24-inch, 12-inch, and 6-inch sections to achieve the precise remaining length. The 24-inch section contributes approximately 22-1/2 inches of installed length per section after joint deduction — exactly twice what the 12-inch contributes — making it the most efficient choice when a two-foot increment is needed without doubling the number of connection points that two 12-inch sections would require.

The 58DVA-24 is a fixed-length rigid pipe section with a constant nominal length of 24 inches and an installed length contribution of approximately 22-1/2 inches per section after the joint deduction. The 58DVA-24TA is a separate adjustable pipe section that can be telescoped to any length within a range of 17 to 24 inches, providing variable length fine-tuning for cases where the exact required total falls within that range and neither the fixed-length sections nor the 8-1/2-inch extension section can bridge the gap precisely. The 58DVA-24TA is used as the final adjustment piece at the end of the run planning sequence, while the 58DVA-24 fixed section is used as one of the standard building blocks. The two are distinct products serving different planning functions and must not be confused when ordering.

Yes. The same DirectVent Pro fixed-length pipe sections — including the 58DVA-24 — are used in both horizontal and vertical segments of the vent run. The coaxial design of the system functions identically whether the pipe is oriented horizontally or vertically — the inner pipe always carries flue gases outward toward the termination and the outer pipe always carries combustion air inward toward the appliance regardless of pipe orientation. DuraVent notes that the DirectVent Pro system allows most appliances to vent both vertically and horizontally per the appliance manufacturer's instructions. The specific permitted configurations — whether horizontal only, vertical only, or a combination — depend entirely on the appliance manufacturer's certification and installation instructions for the specific appliance model.

Each DirectVent Pro pipe section — including the 58DVA-24 — has one male connection end and one female connection end. When a section is connected to the adjacent section in the run, one joint is formed at the male-to-female overlap, and 1-1/2 inches is subtracted from the installed length calculation for that joint. A single 58DVA-24 section therefore involves one joint deduction of 1-1/2 inches at its connection end, giving an installed length contribution of approximately 22-1/2 inches. In a run using multiple 24-inch sections, each section introduces one additional joint and one additional 1-1/2-inch deduction — so three 58DVA-24 sections in series involve three joint deductions totaling 4-1/2 inches, yielding a total installed length of approximately 67-1/2 inches from a nominal 72 inches.

DuraVent specifies that sealant at DirectVent Pro twist-lock connections is optional for the vent system itself — the precision-engineered twist-lock joints provide a sufficiently leak-resistant connection without sealant under normal installation conditions. However, some appliance manufacturers specify in their installation instructions that sealant must be applied at specific connection points — typically at the connection between the vent pipe and the appliance collar — as a condition of their product certification. The appliance manufacturer's installation instructions are the governing authority on sealant requirements for a specific installation. If the appliance instructions require sealant, a high-temperature sealant approved for direct vent installations must be used at the specified locations, regardless of the default DirectVent Pro specification that sealant is optional.

The DirectVent Pro 5x8 fixed-length rigid pipe section range includes the 58DVA-06 at 6 inches, the 58DVA-12 at 12 inches, the 58DVA-24 at 24 inches, the 58DVA-36 at 36 inches, the 58DVA-48 at 48 inches, and the 58DVA-60 at 60 inches. All sections share the same .020-inch aluminum inner wall, .018-inch galvanized steel outer wall, fully unitized twist-lock construction, and 1-1/2 inch per joint installed length deduction. Each is available in both galvanized and black painted outer finish — black sections are designated with a B suffix. The 8-1/2-inch adjustable extension 58DVA-08A and the 17 to 24 inch adjustable section 58DVA-24TA supplement the fixed-length sections for fine-tuning total installed run length to precise dimensions.