Selkirk 4" BW Install Kit (Oval Type B Gas Vent)

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Selkirk 4" BW Install Kit

The Type BW installation kit contains one pair of Type BW plate spacers (40V-CS) and one BW Hold Down Plate (40V-BP).

Oval Type B Gas Vent

Model OV Type B Gas Vent offers all of the advantages and installation conveniences of round pipe in a compact oval design.  An aluminum inner liner designed to assure quick vent action and minimal condensation.  Complete line of components that work together with Model RV round Type B Gas Vent.

4" to 6" Diameter:
  • Aluminum inner liner
  • Galvanized outer wall
  • 4" is Listed as Type "B", Type "BW" and Type B - 2 x 4
  • 5" is Listed as Type "B" and a Type B - 2 x 4 and 2 x 6 for use in a stud wall.
  • 6" is LIsted as Type "B" and Type B - 2 x 6 for use in a stud wall
  • 4" Type "BW" installation kit available
  • Oval Firestop Spacers available for use in stud walls
  • Smart Choice warranty on all components


  • Listed to UL 441

Product Code
Part No Size
4OV-BW 164607 4-Inch

CA Residents: See Prop 65 WARNING.


Lifetime Limited Warranty

Refer to the Smart Choice Warranty for full warranty details.