3"x4" Adjustable Concentric Termination (3.9"-7.1" Wall Thickness) Zoom

3"x4" Adjustable Concentric Termination (3.9"-7.1" Wall Thickness)


Brand: Takagi

TK-KPCT43-1 has been discontinued.
Suggested Alternative:
SKU: 9008147005
Brand: Takagi



Product Type: Venting Part
Vent Type: Concentric Vent Termination Kit
Wall Thickness: 3.9" to 7.1"
Accessory For: T-KJr2-IN
Size: 3" (intake)
4" (exhaust)

Description for Takagi TK-KPCT43-1

Note: Takagi-brand venting is now manufactured by Nova Vent (Z-Vent). Tosetz (T-Vent) previously manufactured Takagi venting. This part is an old component in the T-Vent style. Z-Vent and T-Vent parts are not compatible and should not be used together.

Used when terminating direct-vent systems. For use with Takagi direct-vent models that require a 3" intake and a 4" exhaust. This concentric termination provides the convenience of only having to make one penetration through a sidewall instead of two separate penetrations for the intake and exhaust piping. The louver termination acts as a bird screen, restricting small animals, pests, and foreign objects from entering into the vent system. This sidewall termination is available in three different sizes, to cover all ranges of wall thicknesses.


  • Simple Leak-proof gasketed connections (no sealant required)
  • Quick and easy- "Snap-Lock" connections
  • High quality-Category III Stainless Steel
  • Versatility-vertical and horizontal terminations
  • Sliding adjustable pieces and convenience-T-vent kits are available
  • All T-Vent Products are UL Listed
  • All connections have heat resistant rubber gaskets
For Takagi Models:
  • T-KJr2-IN
  • T-K4-IN
  • T-D2-IN

3"x4" Adjustable Concentric Termination (3.9"-7.1" Wall Thickness)


by PowerReviews
Takagi3"x4" Adjustable Concentric Termination (3.9"-7.1" Wall Thickness)

(based on 1 review)

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Reviewed by 1 customer

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(1 of 1 customers found this review helpful)


Adapter Tee Required

By RadPro

from Durham, CT

Comments about 3"x4" Adjustable Concentric Termination (3.9"-7.1" Wall Thickness):

Part# TK-KPDRV4 OR TK-KPAA4 is required to mate the concentric kit to the TK heater. Exhaust inlet of the concentric is Male, Exhaust outlet of the heater is Male. These part numbers provide Female to Female adapter.

Also, the combustion air duct between the heater is not included. Takagi says purchase aftermarket metal dryer vent type material or PVC.

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1 Question | 3 Answers
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  • 3"x4" Adjustable Concentric Termination (3.9"-7.1" Wall Thickness)


    Is the combustion air duct to the heater included?
    Asked on 6/25/2012 by RadPro from Durham, CT

    3 answers



      Yes, combustion air goes around the outside of the unit and exhaust gasses go to the center of the unit.

      Answered on 6/26/2012 by Anonymous


      The 3" air duct for combustion air is not included and must be field-provided.

      Answered on 6/26/2012 by PexSupply Staff from NY


      Pete Olson, Manager
      Energy Services
      Cedar Falls Utilities

      Answered on 6/26/2012 by Anonymous
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