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ADFC — Double-Wall Gas Vent Segment

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. The System Design and Installation Guide is an additional resource.

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ADFC — Double-Wall Gas Vent Segment

Diameter Sizes: 3", 4", 5" Lengths: 24", 3', 4', 5'

Double-wall corrugated aluminum with B vent ends can be used anywhere B vent is used, except where it passes through walls, floors, ceilings, and inside enclosures. May be compressed to fit.AV_ADFC_VC line drawing double-wall gas vent segment

Available sizes (inches)

ModelAB
3ADFC243"24"
3ADFC33"3'
3ADFC43"4'
3ADFC53"5'
4ADFC244"24"
4ADFC34"3'
4ADFC44"4'
4ADFC54"5'
5ADFC245"24"
5ADFC35"3'
5ADFC45"4'
5ADFC55"5'