How many feet in vertical height must a type B-W gas vent terminate above the wall frame?

Prepare for the Propane Certification Test. Study with targeted flashcards and multiple-choice questions, each offering hints and insights. Ensure your readiness for the exam!

A type B-W gas vent must terminate at a certain vertical height above the wall frame to ensure safe and effective venting of combustion gases. The requirement for a minimum termination height is designed to prevent the buildup of potentially hazardous gases in the vicinity of the structure and to ensure appropriate dispersal of those gases into the atmosphere.

The correct answer specifies a requirement of 12 feet, which aligns with safety standards established for such installations. This height helps to maintain a safe clearance above roof structures and prevents the possibility of gases re-entering the building or affecting neighboring properties.

The other options fall short of the regulatory requirement intended to ensure adequate ventilation and safety for residential and commercial heating systems using propane. Maintaining the specified 12-foot height not only contributes to compliance with building codes but also enhances the effectiveness of the venting system.

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