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OC — 4" Oval Cap

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

OC — 4" Oval Cap

Assets/Details

4" Oval Cap dimensions (inches)

ModelSizeDim. ADim. B
OC4"5 3/8" x 8 1/2"3 1/2"

OC_dimensional