Rinnai 184127 18" Above Roof Discharge Metal Termination

- Item #: BCI1840470

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18" Above Roof Discharge Metal Termination

Rinnai's unique Ubbink concentric venting system provides maximum performance, safety, and ease of installation. Compatible with all indoor Rinnai water heater models, except the 98 series which utilizes separate intake and exhaust venting.

Metal Outer Vent For Intake

  • Painted Galvanized Steel
  • Easy To Cut Compared To Stainless Steel
  • Metal Outer Available When Required By Local Codes
  • Dent And Impact Resistant (Bends And Adapters)
  • White Semi-Gloss Finish (Eu Ral 9016)
  • Wall Thickness 15% Greater Than Stainless Steel
  • Casted Elbows And Adapters

Aluminum Inner Vent For Exhaust

  • Easy To Cut Compared To Stainless Steel
  • Stable, Thick-Walled Material
  • Dent And Crease Resistant
  • Not Affected By Scratches
  • Seamless Extruded Material
  • No Weld lines
  • Thick-Walled, Casted Elbows And Adapters
  • Lightweight
  • Seal Rings With Maximum Temperature 400°F (Approx. 200°C)


  • GSA Approved
  • Vertical Termination Through Roof
  • Easy Assembly
  • Professional Installation Recommended


  • Overall Length: 39.3"
  • Height Above Roof: 18"
  • Diameter: 4-7/8"

Additional Rinnai Links

Our SKU: Rinnai 184127

This product is listed under the following manufacturer number(s):

  • Rinnai 184127

*Denotes a finish or option that has been discontinued

Rinnai 184127 Product Specifications

CSA Approved Yes
Configuration Termination
Diameter 4.875
Length 39.3
Material Galvanized Steel
Pipe Inside Diameter 4
Product Weight 8
Vent Pipe Size 4

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