Skip to navigation
DFC — Double-wall Flexible Gas Vent Connector

How to Specify

Using tables from the National Fuel Gas Code or our Sizing & Application Guide, determine the diameter of venting required. The Sizing & Application Guide also offers tips on good design including multi-appliance system sizing and design.

How to Purchase

Vent FAQs

DFC — Double-wall Flexible Gas Vent Connector

Assets/Details

Submittal Data (67 KB, PDF)
  • Features double-wall, air-insulated construction.
  • Has Type B male/female ends for easy connection with Hart & Cooley vent.
  • Requires only 1" clearance to combustibles.
  • UL-listed for use as a connection from an appliance to Type B gas vent and as a segment of Type B gas vent.
  • Can be used in unconditioned spaces, such as attics and crawl spaces. Do not enclose.
  • Available in 3" through 5" diameters and 2' through 5' lengths.

3" Vent Lengths (inches)

ModelLength
3DFC2424
3DFC336
3DFC448
3DFC560

4" Vent Lengths (inches)

ModelLength
4DFC2424
4DFC336
4DFC448
4DFC560

5" Vent Lengths (inches)

ModelLength
5DFC2424
5DFC336
5DFC448
5DFC560