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ALK — Aluminum Chimney Liner Kits

How to Specify

Using tables from the National Fuel Gas Code or our Sizing & Application Guide, determine the diameter of venting required. The Sizing & Application Guide also offers tips on good design including multi-appliance system sizing and design.

How to Purchase

Vent FAQs

ALK — Aluminum Chimney Liner Kits

  • Kits include flexible length, round top,flashing, mortar guard
  • Standard kit lengths of 15', 25' and 35'
  • Available in 3", 4", 5", 6", 7" and 8" diameters in both kits and 10' extensions
  • 10' insulated sleeve has tough polyethylene exterior (sold separately)
  • Extension kit includes Flexi-Liner with attached connector and fastener package.
  • Pull-downs stretch and lead the Flexi-Liner down the chimney
  • Liner Material Aluminum 3003, 2-ply (0.005"each)
  • Maximum Flue Gas Temperature 470°F
  • Stretch Ratio 5:1 (approximate)
  • Clearances 0" between liner and chimney interior 0" between combustible materials and chimney exterior
  • Liner listed to UL1777 and ULC-S635
  • Compatible with Type B gas vent systems
  • Lifetime warranty

Kits

  1. 3" Kits
  2. 4"
  3. 5"
  4. 5.5"
  5. 6"
  6. 7"
  7. 8"
  8. Extension Kits

3" Kits

Model #Part #Description
3ALK155829483" x 15' Kit Aluminum
3ALK255829493" x 25' Kit Aluminum
3ALK355829503" x 35' Kit Aluminum

4" Kits

Model #Part #Description
4ALK155829514" x 15' Kit Aluminum
4ALK255829524" x 25' Kit Aluminum
4ALK355829534" x 35' Kit Aluminum

5" Kits

Model #Part #Description
5ALK155829545" x 15' Kit Aluminum
5ALK255829555" x 25' Kit Aluminum
5ALK355829565" x 35' Kit Aluminum

5.5" Kits

Model #Part #Description
55ALK255829575.5" x 25' Kit Aluminum
55ALK355829585.5" x 35' Kit Aluminum

6" Kits

Model #Part #Description
6ALK255829596" x 25' Kit Aluminum
6ALK355829606" x 35' Kit Aluminum

7" Kits

Model #Part #Description
7ALK255829617" x 25' Kit Aluminum
7ALK355829627" x 35' Kit Aluminum

8" Kits

Model #Part #Description
8ALK255829638" x 25' Kit Aluminum
8ALK355829648" x 35' Kit Aluminum

Extension Kits

Model #Part #Description
3ALKE105829653" x 10" Ext Kit
4ALKE115829664" x 10" Ext Kit
5ALKE125829675" x 10" Ext Kit
55ALKE135829685.5" x 10" Ext Kit
6ALKE145829696" x 10" Ext Kit
7ALKE155829707" x 10" Ext Kit
8ALKE165829718" x 10" Ext Kit

10' Insulated Sleeves

Model #Part #Description
4ALK-FS582992Flexi-Sleeve 3"- 4"
5ALK-FS582993Flexi-Sleeve 5"
6ALK-FS582994Flexi-Sleeve 5.5"- 6"
7ALK-FS582995Flexi-Sleeve 7"
8ALK-FS582996Flexi-Sleeve 8"

Flex Connectors

Model #Part #Description
3ALK-FC5829723" Flexible Connector
4ALK-FC5829734" Flexible Connector
5ALK-FC5829745" Flexible Connector
55ALK-FC5829755.5" Flexible Connector
6ALK-FC5829766" Flexible Connector
7ALK-FC5829777" Flexible Connector
8ALK-FC5829788" Flexible Connector

Pull-Downs

Model #Part #Description
3FX-PD5829853" Pull-Down
4FX-PD5829863" Pull-Down
5FX-PD5829873" Pull-Down
6FX-PD5829883" Pull-Down
7FX-PD5829893" Pull-Down
8FX-PD5829903" Pull-Down