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4" x 25' Aluminum Chimney Liner Kits

Item: 4ALK25
MFR: 582952

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About This Product

Product Info


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


Weight12.15 Pounds (lbs)
Width9.7 Inches (In)
Height19.7 Inches (In)
Country of OriginVar
UPC or Barcode699663020953
Hazardous MaterialNo
EPA Cert RequiredNo
Length21.6 Inches (In)
BrandHart & Cooley
CompositionFlexible, corrugated, double-layer, single-wall chimney liner, round.
ISO CodeVaries
Material3000 series Aluminum. 2 ply each ply 0.0055" thick.
UL ListedYes
UL RecognizedNo

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