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Discover DirectVent® Pro: The Premier Co-Axial Venting System for Gas and Propane Stoves and Fireplaces

Elevate your heating experience with DirectVent® Pro, a unitized, coaxial (concentric) venting system meticulously designed for use with direct vent gas or propane stoves, heaters, and fireplaces. DirectVent® Pro marries stunning design with Engineered Excellence®, all achieved through state-of-the-art manufacturing techniques. This innovative system is engineered for exceptional performance, featuring tight inner connections that eliminate the need for gaskets or sealants, unless specified by the appliance manufacturer.

Unmatched Craftsmanship:

Sleek Aesthetics: All black pipe lengths, pipe extensions, and elbows are seamlessly laser-welded on their outer walls, delivering a sleek and sophisticated finish that enhances the visual appeal of any interior.

Low-Profile Locks: DirectVent® Pro boasts low-profile locks and eliminates hems or beads, ensuring a beautiful product that effortlessly complements your interior decor.

Engineered Excellence® with Innovation and Style:

DirectVent® Pro embodies innovation and style, setting a standard for excellence in the industry. DuraVent's direct venting system is the preferred choice of virtually every major stove and fireplace manufacturer in the United States and Canada. With DirectVent® Pro, you gain access to the widest selection of termination caps for direct vent applications, offering both performance and style in abundance.

Materials and Construction:

Inner Wall: Constructed from durable 0.020" aluminum, ensuring reliability and longevity.

Outer Wall: Crafted with robust 0.018" galvanized steel, designed to endure the test of time.

Painted Outer Walls: The outer walls are made of laser-welded 0.018" galvalume steel, with additional options available in stainless steel and copper.

Efficient Design: The outer pipe efficiently supplies combustion air to the appliance, while the inner pipe effectively exhausts flue gases to the exterior. No gaskets or sealants are necessary, unless specified by the appliance manufacturer.


Clearances for DirectVent® Pro are manufacturer-specified to guarantee both safety and optimal system performance.

Diameter: DirectVent® Pro is available in a 5" x 8" diameter for versatile installation options.


DirectVent Pro, when used in conjunction with a gas appliance, has undergone rigorous testing and achieved listings as a decorative gas appliance system or as a direct vent heater system from major testing agencies, including UL, CSA, Warnock Hersey, or OMNI. Always consult your appliance manufacturer to ensure compatibility.

Planning Your Installation:

Vertical Gas Stove Installations: Measure the height from the stove outlet to the ceiling to determine the required length of black pipe. Choose between a ceiling support/wall thimble cover or a cathedral ceiling support box.

Determining Galvanized Pipe Length: Measure the ceiling thickness and vertical rise in an attic or second story to determine the length of galvanized pipe needed. Ensure firestops are installed at each floor level beyond the first-floor ceiling support/wall thimble cover or cathedral ceiling support box. If obstructions necessitate an offset, employ a pair of 45° elbows with appropriate support. For extended vertical runs, use wall straps. Attic Insulation Shield is mandatory for attic installations.

Roof Pitch and Flashing: Measure the roof pitch and select the suitable flashing and storm collar. Determine the minimum height above the roof.

Horizontal Installations: Review the appliance manufacturer’s instructions for minimum rise and maximum horizontal run. When height restrictions limit adequate rise above the appliance, consider a snorkel termination. Select the appropriate Horizontal Termination Cap as per the appliance manufacturer's installation instructions. To safeguard vinyl siding, opt for a vinyl siding standoff. Verify the appliance manufacturer's instructions for wall thimble and firestop requirements.

Design Recommendations:

Ensure that the inner and outer pipe diameters match the appliance's outlet size.

Refer to the appliance manufacturer's installation instructions to confirm permitted vent configurations (horizontal, vertical, chimney reline, etc.) and any venting restrictions, such as maximum horizontal run, minimum and maximum vertical rise, and maximum offset.

Prioritize safety by maintaining the minimum clearances (air-space) as specified in the appliance manufacturer’s installation instructions. Proper support and bracing are essential. Adhere to local building codes and schedule inspections for your venting system.

Frequently Asked Questions:

Q: Is professional installation necessary for DirectVent® Pro?
A: While professional installation is recommended for safety and compliance, individuals with experience in similar installations may opt for DIY installation by following the provided instructions.

Q: Can DirectVent® Pro be used with both gas and propane appliances?
A: Yes, DirectVent® Pro is designed to accommodate both gas and propane stoves, heaters, and fireplaces.

Q: Are additional components required for installation?
A: DirectVent® Pro kits typically include essential components, but additional accessories may be necessary based on your specific installation requirements. Consult the installation instructions and your appliance manufacturer's guidelines for a complete list of required components.

Q: Is DirectVent® Pro suitable for outdoor installations?
A: No, DirectVent® Pro is intended for indoor use with gas and propane appliances. For outdoor installations, explore the manufacturer's outdoor venting solutions.

If you need more guidelines and have questions please contact Fireplace Doors Online tech department. Safety and proper installation are paramount, so always follow the manufacturer's recommendations and consult a professional when necessary.