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OF — Oval Flashing

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

OF — Oval Flashing


  • The all-pitch flashing is installed either parallel or perpendicular to the roof ridge, and fits roof pitches flat to 5/12.

Oval Flashing dimensions (inches)

ModelSizeDim. ADim. B
4OF4"17 7/8" 13 1/2"