DuraVent

DuraVent 20' Flex Pipe DuraFlex Pro Stainless Steel Length

$632.00
$632.00
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DuraVent 20' Flex Pipe DuraFlex Pro Stainless Steel Length

The DuraVent 20' Flex Pipe DuraFlex Pro Stainless Steel Length is a premium flexible chimney liner designed for superior strength, flexibility, and reliable masonry chimney relining. Manufactured with highly corrosion-resistant 316 stainless steel, DuraFlex Pro features 20% more stainless steel per foot compared to many standard liners, delivering enhanced durability and performance. Its extreme flexibility allows smooth installation through chimneys with multiple offsets, making it ideal for wood-burning stoves, fireplace inserts, and solid-fuel appliances. Available in 3-inch through 12-inch diameters, this stainless steel chimney liner is listed to UL 1777 and ULC S635 standards.

Built for professional chimney restoration and venting upgrades, the DuraFlex Pro flexible liner supports efficient flue gas flow, proper chimney draft, and improved appliance performance. Its durable construction helps protect chimney systems from heat, moisture, and corrosive combustion byproducts. This 20-foot stainless steel chimney pipe liner is a dependable choice for residential and commercial applications requiring safe, long-lasting, and code-compliant chimney venting solutions backed by trusted DuraVent quality.

Features

  • Premium DuraVent DuraFlex Pro Stainless Steel Liner: The 20' Flex Pipe DuraFlex Pro is a high-performance flexible chimney liner designed for professional masonry chimney relining and venting applications.
  • Durable 316 Stainless Steel Construction: Manufactured with corrosion-resistant 316 stainless steel alloy to provide superior strength, durability, and extended service life in demanding chimney environments.
  • Ideal for Multiple Offset Installations: Engineered with exceptional flexibility, making it the best choice for chimney installations with multiple offsets and complex venting configurations.
  • Compatible with Multiple Fuel Applications: Designed for use with solid fuel appliances, non-condensing gas appliances, and oil-fired heating systems.
  • Enhanced Corrosion Resistance for Coal Burning: The 316 stainless steel alloy provides additional protection when burning coal or sulfur-containing oils, helping prevent corrosion and liner deterioration.
  • Improves Chimney Draft & Venting Performance: Supports efficient flue gas flow, reliable chimney draft, and improved heating appliance operation.
  • Flexible Chimney Pipe for Easy Installation: Allows easier routing through existing chimney structures while reducing installation challenges during chimney liner replacement projects.
  • Professional Chimney Relining Solution: Ideal for wood stove chimney liners, fireplace insert installations, chimney restoration, and stainless steel vent upgrades.
  • UL Listed Stainless Steel Chimney Liner: Meets UL 1777 and ULC S635 standards for safe, reliable, and code-compliant chimney liner systems.

Specifications

Model Size Flex Length
3DFPRO-20 3" I.D 20 ft.
4DFPRO-20 4" I.D 20 ft.
5DFPRO-20 5" I.D 20 ft.
55DFPRO-20 5.5" I.D 20 ft.
6DFPRO-20 6" I.D 20 ft.
7DFPRO-20 7" I.D 20 ft.
8DFPRO-20 8" I.D 20 ft.
Materials 316 stainless steel
Construction Single-Wall
Clearance 0” clearance for gas, oil, and pellet applications.
Clearance 1” clearance to masonry for wood-burning
Listings Listed to UL 1777 and ULC S635 (MH45609).
Warranty Limited-lifetime warranty

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