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Direct Vent

Specifications and Dimensions 

Available Pipe Sizes & Lengths 

Sizes: Nominal 4" ID x 6 5/8" OD and Nominal 5" ID x 8" OD 
Lengths: 7", 12", 24", 36", and 48"


For venting direct vent gas appliances listed or certified for use with AmeriVent Direct Vent. For information on venting gas appliances having draft hoods and other appliances listed to be used with Type B Gas Vent, request our Type B Gas Vent Catalog. For information on venting unlisted gas appliances or appliances burning solid or liquid fuels, request our TLC Chimney Catalog.


Inner Pipe: Type 430 Stainless Steel 
Outer Pipe: Galvanized Steel

Metal Thickness

Pipe SizeInner PipeOuter Pipe
Nominal 4 x 6 5/8".012".018"
Nominal 5" x 8".012".018"


Refer to the appliance manufacturer’s installation instructions for minimum clearances to combustibles.

Listed by 

  • CSA
  • ITS
  • Omni
  • UL

Approval Letters

z - Cover Image: Warnock Hersey_Approval

Typical Installations

Vertical InstallationVertical to Horizontal InstallationRear Exit Horizontal InstallationMasonry Conversion Installation