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OSC — Oval Storm Collar

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

OSC — Oval Storm Collar

Assets/Details

  • The storm collar serves as a counter flashing and requires mastic to seal to the vent pipe.

Oval Storm Collar sizes (inches)

ModelSize
4OSC4
5OSC5