Enhance your fireplace with the unmatched strength and flexibility of DuraFlex Stainless Steel by Duravent. Engineered for optimal performance, this chimney liner redefines reliability, making it the perfect choice for a variety of applications, including fireplace inserts, furnaces, boilers, and water heaters.
Ultimate Flexibility: DuraFlex Pro boasts 20% more stainless steel per foot, facilitating seamless installations even in challenging setups with multiple offsets.
Efficiency Redefined: DuraFlex SW features a smooth inner-wall design, ensuring no output reduction and maximizing the efficiency of your appliances.
Corrosion Resistance: DuraFlex 316 & 304 are lighter and economical options, offering excellent resistance for wood, gas, and oil applications. DuraFlex 316 is ideal for harsh conditions, such as coal-fired appliances.
Robust Construction: Single-wall .005″ stainless steel construction ensures durability, reliability, and longevity.
Listed to Standards: All DuraFlex variants are listed to UL 1777 and ULC S635, meeting the highest safety and performance standards.
DuraFlex Pro:
Material: Single-wall .005″ 316 stainless steel
Diameter Options: 3″ – 12″
Clearance:
0″ clearance for gas, oil, and pellet applications
1″ clearance to masonry for wood-burning applications
Insulation required for 0″ clearance to masonry for wood-burning
DuraFlex SW:
Material: Single-wall .005″ overlapped 316 stainless steel (totalling .010″)
Diameter Options: 3″ – 12″
Clearances:
0″ clearance for gas, oil, and pellet applications
1″ clearance to masonry for wood-burning applications
Insulation required for 0″ clearance to masonry for wood-burning
DuraFlex 316 & 304:
Material: Single-wall .005” 316 or 304 stainless steel
Diameter Options: 3″ – 8″
Clearances:
0″ clearance for gas, oil, and pellet applications
1″ clearance to masonry for wood-burning applications
Insulation required for 0″ clearance to masonry for wood-burning
Listings:
DuraFlex Pro: Listed to UL 1777 and ULC S635 (MH45609)
DuraFlex SW: Listed to UL 1777 (MH45609)
DuraFlex 316 & 304: Listed to UL 1777 and ULC S635 (MH45609)
Typical Applications:
Suitable for gas, wood pellet, oil, or wood appliances
Applications include fireplace inserts, furnaces, boilers, and water heaters
Construction:
DuraFlex Pro: Single-wall .005″ 316 stainless steel
DuraFlex SW: Single-wall .005″ overlapped 316 stainless steel (totalling .010″). Overlapped to create a smooth inner wall.
DuraFlex 316 & 304: Single-wall .005” 316 or 304 stainless steel
Diameters:
DuraFlex Pro & SW: 3″ – 12″
DuraFlex 316 & 304: 3″ – 8″
1. DuraFlex Pro:
Application: Ultra-flexible relining for masonry chimney.
Use with: Gas, wood pellet, oil, or wood appliances.
Ideal for: Fireplace inserts, furnaces, boilers, and water heaters.
Clearances:
0″ clearance for gas, oil, and pellet applications.
1″ clearance to masonry for wood-burning applications.
Insulation required for 0″ clearance to masonry for wood-burning.
2. DuraFlex SW:
Application: Smooth wall flexible relining for masonry chimney.
Use with: Gas, wood pellet, oil, or wood appliances.
Ideal for: Fireplace inserts, furnaces, boilers, and water heaters.
Clearances:
0″ clearance for gas, oil, and pellet applications.
1″ clearance to masonry for wood-burning applications.
Insulation required for 0″ clearance to masonry for wood-burning.
3. DuraFlex 316:
Application: Flexible relining for masonry chimney.
Use with: Gas, wood pellet, oil, or wood appliances.
Ideal for: Harsher conditions, such as coal.
Clearances:
0″ clearance for gas, oil, and pellet applications.
1″ clearance to masonry for wood-burning applications.
Insulation required for 0″ clearance to masonry for wood-burning.
4. DuraFlex 304:
Application: Flexible relining for masonry chimney.
Use with: Gas, wood pellet, oil, or wood appliances.
Ideal for: General applications.
Clearances:
0″ clearance for gas, oil, and pellet applications.
1″ clearance to masonry for wood-burning applications.
Insulation required for 0″ clearance to masonry for wood-burning.
Wood
Wood
DuraFlex Pro:
Clearances:
0″ clearance for gas, oil, and pellet applications.
1″ clearance to masonry for wood-burning applications.
Insulation is required for 0″ clearance to masonry for wood-burning.
Cavity Measurements:
Ensure a secure fit within chimney cavities.
Top Plate dimensions must match the chimney opening for a leak-proof installation.
DuraFlex SW:
Clearances:
0″ clearance for gas, oil, and pellet applications.
1″ clearance to masonry for wood-burning applications.
Insulation is required for 0″ clearance to masonry for wood-burning.
Cavity Measurements:
Ensure a secure fit within chimney cavities.
Top Plate dimensions must match the chimney opening for a leak-proof installation.
DuraFlex 316 & 304:
Clearances:
0″ clearance for gas, oil, and pellet applications.
1″ clearance to masonry for wood-burning applications.
Insulation is required for 0″ clearance to masonry for wood-burning.
Cavity Measurements:
Ensure a secure fit within chimney cavities.
Top Plate dimensions must match the chimney opening for a leak-proof installation.
Limited warranty
Elevate your fireplace experience with the DuraFlex Stainless Steel by Duravent, a premium line of chimney liners designed to redefine durability and flexibility in the world of fireplaces. Crafted with precision, the DuraFlex Pro variant stands out with its remarkable 20% more stainless steel per foot compared to other market options, ensuring unmatched strength and versatility. This makes it the ideal choice for installations where multiple offsets are required. For those seeking optimal efficiency, the DuraFlex SW boasts a smooth inner-wall construction that eliminates ridges, facilitating easy cleaning and maintenance while maximizing the performance of gas, wood pellet, oil, or wood-burning appliances.
The DuraFlex 316 and 304 models offer lighter and more economical options without compromising on quality. Perfect for applications with minimal offsets in the chimney, these variants provide excellent corrosion resistance, catering to a range of fuel types, from wood and gas to non-condensing oil. All DuraFlex models are meticulously manufactured using single-wall .005″ 316 or 304 stainless steel, ensuring robust construction and longevity.
Listed to the highest safety standards (UL 1777 and ULC S635), DuraFlex Stainless Steel guarantees a secure and compliant installation for gas, oil, pellet, or wood-burning appliances. Whether it’s the extreme flexibility of DuraFlex Pro, the efficiency of DuraFlex SW, or the economical yet reliable DuraFlex 316 and 304 options, these chimney liners redefine performance, bringing durability and peace of mind to every fireplace setting. Choose DuraFlex Stainless Steel for a fireplace experience that combines strength, flexibility, and safety in one exceptional package.
Duravent Fireplaces, part of the Duravent Group, stands as a pioneering force in the realm of innovative and high-performance chimney and venting solutions. With a rich legacy dating back to its establishment, Duravent has consistently been at the forefront of creating cutting-edge products that redefine safety, efficiency, and design in the fireplace industry.
The company’s commitment to excellence is evident in its diverse portfolio of brands, including Airmate, Hart & Cooley, RPS, AmeriFlow, Heatfab, Security Chimneys, AmeriVent, Lima, Selkirk, AMPCO, Milcor, and Duravent. Each brand under the Duravent umbrella embodies a unique set of qualities, catering to various needs and preferences within the heating and ventilation market.
Duravent Fireplaces specializes in providing top-of-the-line chimney liners, venting systems, and fireplace accessories. The DuraFlex Stainless Steel series, a flagship product line, exemplifies the company’s dedication to delivering solutions that combine durability, flexibility, and safety. The range caters to a spectrum of applications, including gas, oil, wood pellet, and wood-burning appliances, ensuring a versatile and comprehensive offering for consumers.
Committed to upholding the highest industry standards, Duravent Fireplaces ensures that its products meet or exceed safety certifications. The DuraFlex Stainless Steel series, for instance, is listed to UL 1777 and ULC S635, providing customers with the assurance of a reliable and compliant solution.
Duravent Fireplaces continues to be an industry leader through continuous innovation, stringent quality control measures, and a customer-centric approach. As a trusted partner for homeowners, contractors, and distributors alike, Duravent Fireplaces remains dedicated to shaping the future of fireplace technology, setting new benchmarks for performance and reliability.
Q: What is DuraFlex Stainless Steel?
A: DuraFlex Stainless Steel is a premium line of chimney liners manufactured by Duravent, designed to enhance the performance and durability of fireplaces.
Q: What makes DuraFlex Pro stand out?
A: DuraFlex Pro stands out with its 20% more stainless steel per foot, providing unmatched strength and flexibility, ideal for installations with multiple offsets.
Q: How does DuraFlex SW contribute to efficiency?
A: DuraFlex SW features a smooth inner-wall construction that eliminates ridges, ensuring no output reduction and facilitating easy cleaning for optimal efficiency.
Q: What applications are suitable for DuraFlex Stainless Steel?
A: DuraFlex Stainless Steel is suitable for gas, wood pellet, oil, and wood-burning appliances, including fireplace inserts, furnaces, boilers, and water heaters.
Q: What is the construction material of DuraFlex Pro?
A: DuraFlex Pro is constructed with single-wall .005″ 316 stainless steel, ensuring durability and corrosion resistance.
Q: Are there diameter options available for DuraFlex Stainless Steel?
A: Yes, DuraFlex Pro and SW are available in diameters ranging from 3″ to 12″, while DuraFlex 316 and 304 are available in diameters from 3″ to 8″.
Q: What clearances are required for DuraFlex Pro?
A: DuraFlex Pro requires 0″ clearance for gas, oil, and pellet applications and 1″ clearance to masonry for wood-burning applications.
Q: Is insulation necessary for DuraFlex SW clearances?
A: Yes, insulation is required for 0″ clearance to masonry for wood-burning with DuraFlex SW.
Q: Can DuraFlex 316 be used in harsh conditions?
A: Yes, DuraFlex 316 is designed for harsh conditions, offering more resistance to corrosion, suitable for applications such as coal-fired appliances.
Q: What listings do DuraFlex products have?
A: All DuraFlex variants are listed to UL 1777 and ULC S635, ensuring they meet the highest safety and performance standards.
Q: What are the typical applications for DuraFlex Stainless Steel?
A: Typical applications include fireplace inserts, furnaces, boilers, and water heaters for various fuel types.
Q: Why is a straight vent path recommended for optimal performance?
A: Keeping the vent path as straight as possible ensures the best performance for DuraFlex Stainless Steel in various installations.
Q: How should I select the appropriate liner for my application?
A: Consider the fuel type and application requirements. DuraFlex SS is for oil, wood, or wood-pellets; DuraFlex AL is for non-condensing gas.
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Dreifuss Fireplaces Has Been the Top
Provider of High-Quality Fireplace
Installation in PA Since 1876.
