7'' Chimney Liner

Bring New Life & Vitality to Your Chimney with a Lifetime Chimney Lining System


Lifetime chimney liners feature a patented gas-tight interlock system that is unsurpassed in strength. Each Lifetime Chimney Lining System is engineered for long-lasting durability, offered at an economical price that every homeowner can easily afford and fully covered by Lifetime Chimney's lifetime warranty, even if you install it yourself!

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  • 7" x 35' Lifetime Chimney Smooth-Wall Liner Kit with Tee 7" x 35' Lifetime Chimney Smooth-Wall Liner Kit with Tee

    7" x 35' Lifetime Chimney Smooth-Wall Liner Kit with Tee

    7" x 35' Lifetime Chimney Smooth-Wall Liner Kit with Tee

    $899.99
    Lifetime
  • 7" x 25' Lifetime Chimney Smooth-Wall Liner Kit with Stove Adapter 7" x 25' Lifetime Chimney Smooth-Wall Liner Kit with Stove Adapter

    7" x 25' Lifetime Chimney Smooth-Wall Liner Kit with Stove Adapter

    7" x 25' Lifetime Chimney Smooth-Wall Liner Kit with Stove Adapter

    $769.99
    Lifetime
  • 7" DuraFlexAL Top Plate - 7DFA-TP

    7" DuraFlexAL Top Plate - 7DFA-TP

    7" DuraFlexAL Top Plate - 7DFA-TP

    $63.29
    MSRP $44.37
    DuraFlex AL
  • 7'' DuraFlexAL Coupling - 7DFA-FC

    7'' DuraFlexAL Coupling - 7DFA-FC

    Sale

    7'' DuraFlexAL Coupling - 7DFA-FC

    $74.69 $63.49
    MSRP $60.5
    DuraFlex AL
    Sale
  • 7" DuraFlexSS Puller - 7DFS-FP

    7" DuraFlexSS Puller - 7DFS-FP

    7" DuraFlexSS Puller - 7DFS-FP

    $44.89
    MSRP $47.06
    DuraFlex SS
  • 7" x 25' Lifetime Chimney Single-Wall Liner Kit with Stove Adapter 7" x 25' Lifetime Chimney Single-Wall Liner Kit with Stove Adapter

    7" x 25' Lifetime Chimney Single-Wall Liner Kit with Stove Adapter

    Sale

    7" x 25' Lifetime Chimney Single-Wall Liner Kit with Stove Adapter

    $746.99 $634.94
    Lifetime
    Sale

    • Can’t Find What You Are Looking For?

  • 7'' DuraFlexAL 25' Aluminum Gas Chimney Liner - 7DFA-25

    7'' DuraFlexAL 25' Aluminum Gas Chimney Liner - 7DFA-25

    7'' DuraFlexAL 25' Aluminum Gas Chimney Liner - 7DFA-25

    $468.99
    MSRP $377.93
    DuraFlex AL
  • 7" x 25' Lifetime Chimney Single-Wall Liner Kit with Tee 7" x 25' Lifetime Chimney Single-Wall Liner Kit with Tee

    7" x 25' Lifetime Chimney Single-Wall Liner Kit with Tee

    Sale

    7" x 25' Lifetime Chimney Single-Wall Liner Kit with Tee

    $779.99 $662.99
    Lifetime
    Sale
  • 7'' x 15' DuraFlex 304 Stainless Steel Chimney Liner - 7DF304-15

    7'' x 15' DuraFlex 304 Stainless Steel Chimney Liner - 7DF304-15

    7'' x 15' DuraFlex 304 Stainless Steel Chimney Liner - 7DF304-15

    $617.99
    MSRP $560.51
    DuraFlex SS
  • 7'' DuraFlexAL 50' Aluminum Gas Chimney Liner - 7DFA-50

    7'' DuraFlexAL 50' Aluminum Gas Chimney Liner - 7DFA-50

    7'' DuraFlexAL 50' Aluminum Gas Chimney Liner - 7DFA-50

    $835.99
    MSRP $673.9
    DuraFlex AL
  • 7" x 35' Lifetime Chimney Smooth-Wall Liner Kit with Stove Adapter 7" x 35' Lifetime Chimney Smooth-Wall Liner Kit with Stove Adapter

    7" x 35' Lifetime Chimney Smooth-Wall Liner Kit with Stove Adapter

    7" x 35' Lifetime Chimney Smooth-Wall Liner Kit with Stove Adapter

    $889.99
    Lifetime
  • 7" DuraFlexSS Top Plate - 7DFS-TP

    7" DuraFlexSS Top Plate - 7DFS-TP

    7" DuraFlexSS Top Plate - 7DFS-TP

    $169.99
    MSRP $154.31
    DuraFlex SS
  • 7'' DuraFlexSS Mortar Sleeve - 7DFS-MS

    7'' DuraFlexSS Mortar Sleeve - 7DFS-MS

    7'' DuraFlexSS Mortar Sleeve - 7DFS-MS

    $28.49
    MSRP $22.48
    DuraFlex SS
  • 7'' DuraFlexSS PRO Tee Kit with 30' Flex

    7'' DuraFlexSS PRO Tee Kit with 30' Flex

    7'' DuraFlexSS PRO Tee Kit with 30' Flex

    $1,850.99
    MSRP $1679.45
    DuraFlex SS
  • 7'' DuraFlexAL Tee - 7DFA-T 7'' DuraFlexAL Tee - 7DFA-T

    7'' DuraFlexAL Tee - 7DFA-T

    7'' DuraFlexAL Tee - 7DFA-T

    $242.99
    MSRP $195.78
    DuraFlex AL
  • 7" DuraFlexAL Female Flex Adapter - 7DFA-FA

    7" DuraFlexAL Female Flex Adapter - 7DFA-FA

    7" DuraFlexAL Female Flex Adapter - 7DFA-FA

    $74.99
    MSRP $63.38
    DuraFlex AL
  • 7'' DuraFlexAL 35' Aluminum Gas Chimney Liner Kit - 7DFA-35K

    7'' DuraFlexAL 35' Aluminum Gas Chimney Liner Kit - 7DFA-35K

    7'' DuraFlexAL 35' Aluminum Gas Chimney Liner Kit - 7DFA-35K

    $818.99
    MSRP $660.22
    DuraFlex AL
  • 7'' DuraFlexSS 316 Tee Kit with 30' Flex

    7'' DuraFlexSS 316 Tee Kit with 30' Flex

    7'' DuraFlexSS 316 Tee Kit with 30' Flex

    $1,815.99
    MSRP $1648.07
    DuraFlex SS
  • 7'' x 20' DuraFlex 304 Stainless Steel Chimney Liner - 7DF304-20

    7'' x 20' DuraFlex 304 Stainless Steel Chimney Liner - 7DF304-20

    7'' x 20' DuraFlex 304 Stainless Steel Chimney Liner - 7DF304-20

    $829.99
    MSRP $752.93
    DuraFlex SS
  • 7" x 35' Lifetime Chimney Single-Wall Liner Kit with Stove Adapter 7" x 35' Lifetime Chimney Single-Wall Liner Kit with Stove Adapter

    7" x 35' Lifetime Chimney Single-Wall Liner Kit with Stove Adapter

    Sale

    7" x 35' Lifetime Chimney Single-Wall Liner Kit with Stove Adapter

    $869.99 $739.49
    Lifetime
    Sale
  • 7'' DuraFlexSS Tee with Cap - 7DFS-T

    7'' DuraFlexSS Tee with Cap - 7DFS-T

    7'' DuraFlexSS Tee with Cap - 7DFS-T

    $500.99
    MSRP $454.59
    DuraFlex SS
  • 7'' DuraFlexSS - 7DFS-S

    7'' DuraFlexSS Spacer - 7DFS-S

    7'' DuraFlexSS Spacer - 7DFS-S

    $136.49
    MSRP $107.71
    DuraFlex SS
  • 7'' DuraFlexSS Connector - 7DFS-FC

    7'' DuraFlexSS Connector - 7DFS-FC

    7'' DuraFlexSS Connector - 7DFS-FC

    $183.99
    MSRP $166.96
    DuraFlex SS
  • 7'' DuraFlexSS PRO Basic Kit with 30' Flexible Stainless Steel Chimney Liner - 7DFPRO-30K

    7'' DuraFlexSS PRO Basic Kit with 30' Flexible Stainless Steel Chimney Liner - 7DFPRO-30K

    7'' DuraFlexSS PRO Basic Kit with 30' Flexible Stainless Steel Chimney Liner - 7DFPRO-30K

    $1,698.99
    MSRP $1541.41
    DuraFlex SS
  • 7'' DuraFlexSS PRO Tee Kit with 25' Flexible Stainless Steel Chimney Liner - 7DFPRO-25KT

    7'' DuraFlexSS PRO Tee Kit with 25' Flexible Stainless Steel Chimney Liner - 7DFPRO-25KT

    7'' DuraFlexSS PRO Tee Kit with 25' Flexible Stainless Steel Chimney Liner - 7DFPRO-25KT

    $1,626.99
    MSRP $1476.57
    DuraFlex SS
  • 7'' DuraFlexSS PRO Basic Kit with 25' Flexible Stainless Steel Chimney Liner - 7DFPRO-25K

    7'' DuraFlexSS PRO Basic Kit with 25' Flexible Stainless Steel Chimney Liner - 7DFPRO-25K

    7'' DuraFlexSS PRO Basic Kit with 25' Flexible Stainless Steel Chimney Liner - 7DFPRO-25K

    $1,474.99
    MSRP $1338.54
    DuraFlex SS
  • 7'' DuraFlexSS PRO Tee Kit with 15' Flexible Stainless Steel Chimney Liner - 7DFPRO-15KT

    7'' DuraFlexSS PRO Tee Kit with 15' Flexible Stainless Steel Chimney Liner - 7DFPRO-15KT

    7'' DuraFlexSS PRO Tee Kit with 15' Flexible Stainless Steel Chimney Liner - 7DFPRO-15KT

    $1,135.99
    MSRP $1031.09
    DuraFlex SS
  • 7'' DuraFlexSS PRO Basic Kit with 15' Flexible Stainless Steel Chimney Liner - 7DFPRO-15K

    7'' DuraFlexSS PRO Basic Kit with 15' Flexible Stainless Steel Chimney Liner - 7DFPRO-15K

    7'' DuraFlexSS PRO Basic Kit with 15' Flexible Stainless Steel Chimney Liner - 7DFPRO-15K

    $1,080.99
    MSRP $980.9
    DuraFlex SS
  • 7'' DuraFlexAL 35' Aluminum Gas Chimney Liner - 7DFA-35

    7'' DuraFlexAL 35' Aluminum Gas Chimney Liner - 7DFA-35

    7'' DuraFlexAL 35' Aluminum Gas Chimney Liner - 7DFA-35

    $821.99
    MSRP $662.62
    DuraFlex AL
  • 7'' DuraFlexAL 25' Aluminum Gas Chimney Liner Kit - 7DFA-25K

    7'' DuraFlexAL 25' Aluminum Gas Chimney Liner Kit - 7DFA-25K

    7'' DuraFlexAL 25' Aluminum Gas Chimney Liner Kit - 7DFA-25K

    $568.99
    MSRP $458.55
    DuraFlex AL
  • 7'' x 50' DuraFlex 316 Stainless Steel Chimney Liner - 7DF316-50

    7'' x 50' DuraFlex 316 Stainless Steel Chimney Liner - 7DF316-50

    7'' x 50' DuraFlex 316 Stainless Steel Chimney Liner - 7DF316-50

    $2,246.99
    MSRP $2039.18
    DuraFlex SS
  • 7'' x 35' DuraFlex 316 Stainless Steel Chimney Liner - 7DF316-35

    7'' x 35' DuraFlex 316 Stainless Steel Chimney Liner - 7DF316-35

    7'' x 35' DuraFlex 316 Stainless Steel Chimney Liner - 7DF316-35

    $1,704.99
    MSRP $1547.68
    DuraFlex SS
  • 7'' x 30' DuraFlex 316 Stainless Steel Chimney Liner - 7DF316-30

    7'' x 30' DuraFlex 316 Stainless Steel Chimney Liner - 7DF316-30

    7'' x 30' DuraFlex 316 Stainless Steel Chimney Liner - 7DF316-30

    $1,467.99
    MSRP $1332.26
    DuraFlex SS
  • 7'' DuraFlexSS 316 Tee Kit with 25' Flexible Stainless Steel Chimney Liner - 7DF316-25KT

    7'' DuraFlexSS 316 Tee Kit with 25' Flexible Stainless Steel Chimney Liner - 7DF316-25KT

    7'' DuraFlexSS 316 Tee Kit with 25' Flexible Stainless Steel Chimney Liner - 7DF316-25KT

    $1,592.99
    MSRP $1445.2
    DuraFlex SS
  • 7'' x 25' DuraFlex 316 Stainless Steel Chimney Liner - 7DF316-25

    7'' x 25' DuraFlex 316 Stainless Steel Chimney Liner - 7DF316-25

    7'' x 25' DuraFlex 316 Stainless Steel Chimney Liner - 7DF316-25

    $1,223.99
    MSRP $1110.57
    DuraFlex SS
  • 7'' x 20' DuraFlex 316 Stainless Steel Chimney Liner - 7DF316-20

    7'' x 20' DuraFlex 316 Stainless Steel Chimney Liner - 7DF316-20

    7'' x 20' DuraFlex 316 Stainless Steel Chimney Liner - 7DF316-20

    $979.99
    MSRP $888.87
    DuraFlex SS

Choose your Brand of Chimney Liner

Lifetime Chimney Liner - Lifetime Chimney Liners are strong, flexible liners that are constructed with 316L grade stainless steel. They are intended for use with masonry chimneys venting appliances that burn home heating oil, LP or natural gas and solid fuels including wood, coal and pellets. This brand is recommended for Do it Yourself Homeowners, as well as professional installers

DuraFlex SS flexible relining for masonry chimney is for use with wood, gas, pellet, coal, or oil appliances including inserts, furnaces, boilers, and water heaters DuraFlex SS is recommended for professional installations.

DuraFlex AL flexible relining for masonry chimney is for use with natural gas or liquid propane category 1, draft hood equipped appliances and appliances tested and listed to use Type B Gas Vent. DuraFlex AL is recommended for professional installations

Follow manufacturer recommendations whenever applicable. Never use a chimney liner that is smaller in diameter than the flue size of the appliance it is being connected to. We recommend you study the brochures to become familiar with the product of choice.