DuraFlex SS Stainless Steel Chimney Liner - 4 inch x 20-ft. - 4DF316-20
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DuraFlex SS Stainless Steel Chimney Liner - 4 inch x 20-ft. - 4DF316-20

DuraFlex SS Stainless Steel Chimney Liner - 4 inch x 20-ft. - 4DF316-20

$413.99 $509.99 19% Off
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Contractor / Technical Details

Product Line

DuraFlex Stainless

Vent Type

Wood Vent

UL Listing

UL1777

Pipe Shape

Round

Telescoping

No

Adjustable

No

Number of Walls

1

Material

316 Stainless Steel

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Product Details

Manufacturer: DuraVent
DuraVent Part Numbers: 4DF316-20
Item Number: CPF-68201
UPC: 662492689554

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Features

  • DuraFlex 20' Stainless Steel Chimney Liner
  • 4-in. diameter
  • Light-weight .006" metal thickness makes it stronger than other light liners
  • Most economical liner for straight chimneys
  • Manufacturers limited lifetime warranty
DuraFlex SS is a flexible chimney liner used to reline masonry chimneys and is rated for use with gas, wood pellet, oil, or wood appliances that include water heaters, boilers, furnaces, and fireplace inserts. It uses a single wall 0.006" thickness that makes it stronger than other light liners. DuraFlex SS is the most economical liner for a straight chimney. This item gives you 20 feet of 4" liner. It should be used with the DuraFlex Zero Clearance Insulation Sleeve so that the UL 1777 standard for masonry chimneys and wood burning appliances is met.

Contractor / Technical Details

Product Details

Product Line

DuraFlex Stainless

Vent Type

Wood Vent

UL Listing

UL1777

Pipe Shape

Round

Telescoping

No

Adjustable

No

Number of Walls

1

Material

316 Stainless Steel

Painted

No

Adapter Needed

No

Support Included

No

Flex Type

Relining

Rigid Compatibility

Yes

Includes Trim

No

Includes Insulation Shield

No

Is Firestop

No

Includes Adapter

No

Includes Cap

No

Vented

No

Firestop Required

No

Air Intake

No

Dimensions / Measurements

Outside Diameter

4 inches

Inside Diameter

4 inches

Max Effective Length

240 inches

Uninsulated Clearance

1 inches

Customer Q&A with Product Specialists

William from Colorado asked:
Is there enough flex in this liner to bend at the existing smoke shelf in the old chimney?
Is there enough flex in this liner to bend at the existing smoke shelf in the old chimney?
Yes, this liner will flex through a damper opening with a minimum opening height of 5.5"
Answered by: Aaron D. on Sep 03, 2024

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Customer Reviews

DuraFlex SS Stainless Steel Chimney Liner - 4 inch x 20-ft. - 4DF316-20
Star - 1 Star - 2 Star - 3 Star - 4 Star - 5
By Jeff W.
Dec 05, 2023
Verified Buyer Check Mark Verified Buyer

Stainless pipe

Good stuff
5.0
Star - 1 Star - 2 Star - 3 Star - 4 Star - 5
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