Selkirk 18" Adjustable Pipe Length (Round Large - Type B Gas Vent)

Size: 10"x18"

Estimated Arrival: Between and . (To All Contiguous States)

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Selkirk 10" to 30" Diameter, 18" Adjustable Pipe Length

Used in combination with a straight length of pipe to assure an exact length can be achieved.

Round Large - Type B Gas Vent

Model R Double Wall Type B Gas Vent is designed for quick and easy installation. It's durability makes it ideal for multi-family and commercial industrial applications. Featuring an aluminum inner liner designed to assure quick vent action and minimal condensation. Lightweight and easy to assemble with snap lock ends.

10" to 30" Diameters:

  • Aluminum inner liner
  • Galvanized outer wall
  • Double-wall design with 1/2" uniform airspace
  • Clearance to combustibles is 1" for diameters 10"-30"
  • Featuring snap lock joints for easy assembly
  • Smart Choice warranty on all components


  • Listed to UL 441 in the U.S.A.

Product Code
Part No Size (Diameter x Length)
2003618 10R18A-S 10"x18"
2003637 12R18A-S 12"x18"
2003675 14R18A-S 14"x18"
2003693 16R18A-S 16"x18"
2003711 18R18A-S 18"x18"
2003729 20R18A-S 20"x18"
2003747 22R18A-S 22"x18"
2003765 24R18A-S 24"x18"
2003782 26R18A-S 26"x18"
2003798 28R18A-S 28"x18"
2003951 30R18A-S 30"x18"

CA Residents: See Prop 65 WARNING.


Lifetime Limited Warranty

Refer to the Smart Choice Warranty for full warranty details.