Selkirk 18"/24"/36" Pipe Length (Round Large - Type B Gas Vent)

Length: 18-Inch
Diameter: 10-Inch

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

✔ Same-Day Order Processing
✔ Free Returns
✔ No Restocking Fees
✔ Financing Options Available

Text or call 888-992-1556, start live chat, or email with any questions. Our team is available to serve you 8:00 AM - 11:59 PM ET, 7 days a week.

Selkirk 10" to 30" Diameter, 18"/24"/36" Pipe Length

Easy to assemble and can be combined to obtain the required installation height. To calculate installed height, deduct 1" for each joint.

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.

18-Inch Pipe Length:

Product Code
Part No Size (Diameter x Length)
2003615 10R18-S 10"x18"
2003634 12R18-S 12"x18"
2003672 14R18-S 14"x18"
2003690 16R18-S 16"x18"
2003708 18R18-S 18"x18"
2003726 20R18-S 20"x18"
2003744 22R18-S 22"x18"
2003762 24R18-S 24"x18"
2003779 26R18-S 26"x18"
2003795 28R18-S 28"x18"
2003810 30R18-S 30"x18"

24-Inch Pipe Length:

Product Code
Part No Size (Diameter x Length)
2003616 10R24-S
2003635 12R24-S 12"x24"
2003673 14R24-S 14"x24"
2003691 16R24-S 16"x24"
2003709 18R24-S 18"x24"
2003727 20R24-S 20"x24"
2003745 22R24-S 22"x24"
2003763 24R24-S 24"x24"
2003780 26R24-S 26"x24"
2003796 28R24-S 28"x24"
2003811 30R24-S 30"x24"

36-Inch Pipe Length:

Product Code
Part No Size (Diameter x Length)
2003617 10R3-S 10"x36"
2003636 12R3-S 12"x36"
2003674 14R3-S 14"x36"
2003692 16R3-S 16"x36"
2003710 18R3-S 18"x36"
2003728 20R3-S 20"x36"
2003746 22R3-S 22"x36"
2003764 24R3-S 24"x36"
2003781 26R3-S 26"x36"
2003797 28R3-S 28"x36"
2003812 30R3-S 30"x36"

CA Residents: See Prop 65 WARNING.


Lifetime Limited Warranty

Refer to the Smart Choice Warranty for full warranty details.