null 6'' x 20' DuraFlexSS 304 Stainless Steel Chimney Liner - 6DF304-20
Menu Toggle


Search Box
Search Box

6'' x 20' DuraFlexSS 304 Stainless Steel Chimney Liner - 6DF304-20

6'' x 20' DuraFlexSS 304 Stainless Steel Chimney Liner - 6DF304-20
SKU: NLE5SP_6DF304_20
MPN: 810002009
In Stock: Ships in 5 to 7 business days
Quantity Discounts Available


DuraFlex 304 SS Chimney Liner is for use with pellet, non-condensing gas, wood burning, and oil appliances. Available in diameters of 3" - 8" and lengths of 15', 20', 25', 30', and 35', the liner is made from single-wall 304 stainless steel.

DuraFlex SS flexible relining is designed for masonry chimney's and for use with gas, wood pellet, oil, or wood appliances. Including fireplace inserts, furnaces, boilers, and water heaters.

See all 6" DuraFlex SS chimney liner components.

Additional Information:

DuraFlex SS relining systems ensure safe and efficient venting of heating appliances while protecting the masonry chimney from the damaging effects of flue product condensation. DuraFlex is available in 304 and 316Ti stainless steel. The 304 and 316Ti SS are designed for use with pellet, non-condensing gas, and oil appliances. DuraFlex SS and 316Ti SS, when used with the Simpson DuraVent Two-Ply Insulation Sleeve, may be used for relining wood burning fireplace inserts and stoves to meet UL 1777 and ULC S635 standards with 0" clearance to masonry.

Adobe PDF Icon  Installation Instructions

California Proposition 65 Warning SymbolWARNING: This product can expose you to chemicals including Chromium, which is known to the State Of California to cause cancer and birth defects or other reproductive harmFor more information go to

  • Diameter: 6"
  • Length: 20'
  • Construction Material: 304 single-wall .005" stainless steel flexible liner
  • Clearances: 0" clearance to masonry for gas, 1" clearance for pellet and oil stoves, for wood-burning applications, insulation is required for 0" clearance to masonry
  • Listed to UL 1777 (MH14420) and ULC S635

Additional Information

Clearance Non-Clearance
Country Of Origin United States
Pipe Wall Single Wall
Pipe Piece Chimney Liner
Type Chimney Liner Pipe
Diameter 6 Inch
Product Type Chimney Pipe
Left Overlay Image Made in America.png
HR-mail-only true
Lowest Bulk Price 361.31
Brand DuraFlex SS


Satisfaction Guaranteed - We stand behind everything we sell! If you are not satisfied with your purchase, return it for a full refund. Click for more details.
FREE ECONOMY SHIPPING, NO MINIMUM, FOR A LIMITED TIME! Some restrictions apply. Click for more details.
Featuring the Chimney Wizard - Configure Your Chimney and Save in Minutes. Click for more details.