Rinnai STDKITVA-A21 21" All Weather Plastic Horizontal Termination Kit

- Item #: BCI1840441

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21" All Weather Plastic Horizontal Termination Kit

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.

Plastic Outer Vent For Intake

  • Easy To Cut Compared To Stainless Steel
  • Dent And Impact Resistant
  • Corrosion-Proof
  • Non-Flammable Material (ul94-V0)
  • Seamless Extruded Materials
  • Casted Elbows And Adapters
  • White Semi-Gloss Finish (Eu Ral 9016)

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)


  • Zero Clearance To Combustibles
  • Single Penetration Through Wall For Both Intake And Exhaust
  • GSA Approved
  • Easy Assembly
  • Fits Models: RL94i, RL75i
  • Professional Installation Recommended
  • Includes:
    • (1) 90 Degree Elbow
    • (1) 21" Horizontal Termination Pipe
    • Rubber Wall Plate


  • Length: 21"

Additional Rinnai Links

Our SKU: Rinnai STDKITVA-A21

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

*Denotes a finish or option that has been discontinued

Rinnai STDKITVA-A21 Product Specifications

CSA Approved Yes
Configuration Termination Kit
Length 21
Product Weight 3.5

Installation Resource Center

Whether you are installing the product yourself or hiring a professional, our installation Resource Center has everything you need to get your project done. Visit the Installation Resource Center to get started.

Rinnai STDKITVA-A21 Reviews

Rated 5 out of 5 by from Great Transaction I recently purchase two 21" All Weather Plastic Horizontal Termination Kit for two Rinnai tankless water heaters. Although I have not yet installed them, I know without a doubt they will go in with no problem as I had previously installed the product approximately three years ago in the garage. I will be placing these two in the house shortly. Thank you so much for a smooth and easy transaction. It's Great . . . T
Date published: 2012-11-28
  • Does this come with an extension?

    A. The Rinnai STDKITVA-A21 is going to come with the Casted Elbows And Adapters.

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