5 Inch x 8 Inch DirectVent Pro 8 1/2" Black Chimney Pipe Extension

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  • High-quality DirectVent Pro 8 1/2" Black Chimney Pipe Extension
  • Black Pipe Sizing Chart Guide
Frequently bought together:


Product Specifications:

  • Inner Diameter: 5" x 8"
  • Length: 8 1/2"
  • Product: Black Pipe
  • Material: Galvalume
  • Use: Ducting and Venting
  • Style: Repair & Replacement

This extender is designed to elongate a straight length effectively. By combining it with rigid pipes measuring 8 to 12 inches, you can achieve an extension of 3 to 7 inches. Similarly, when used with 16-inch pipes, it enables an extension ranging from 3 to 14 and a half inches. The lengths of the pipes are fully standardized and securely connected through a twist-lock mechanism.


  • Use to add length to a straight length of DirectVent Pro
  • 8 ½” pipe adds 3”- 7” of length, 16” pipe adds 3”- 14 ½” of length when used with rigid sections of pipe
  • Direct vent lengths feature a fully unitized, twist-lock construction
  • Use of sealant is optional unless specified by the appliance manufacturer
  • Available in black or galvalume exterior (both feature laser-welded outer wall seams). Does not fit DirectVent GS pipe
  • Provides combustion air and exhaust venting for gas appliances
  • Clearance to combustibles mandated by appliance listing
  • The components twist-lock together for a quick, secure, fastener-free installation
  • 0.020" aluminum inner
  • 0.018" steel outer
  • Offsets venting obstructions

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Warranty Information

DuraVent, Inc. (“DuraVent”) provides this limited lifetime warranty for all of its products with the exception of Ventinox® (lifetime), and PolyPro® (ten years). Subject to the limitations set forth below, DuraVent warrants that its products will be free from defects in material or manufacturing, if properly installed, maintained and used.

DuraVent products are fully warranted if installed only by a professional installer. This Warranty is transferable from the original homeowner to the buyer of the home.

This warranty does not cover normal wear and tear, smoke damage or damage caused by chimney fires, acts of God, or any product that was:

(1) purchased other than from an authorized DuraVent dealer, retailer or distributor;

(2) modified or altered;

(3) improperly serviced, inspected or cleaned; or (4) subject to negligence or any use not in accordance with the installation instructions included with the product as determined by DuraVent.

This limited lifetime warranty applies only to parts manufactured by DuraVent.

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