AL Insulation Practice Questions - Alabama Insulation Contractor Examination Exam

Net free ventilating area (NFVA) differs from gross vent opening area because NFVA:

Ignores screens and louvers that restrict airflow Accounts for the actual unobstructed free area after screens, louvers, and internal restrictions Is always ten times the gross area Applies only to plumbing cleanouts

Correct Answer:

Accounts for the actual unobstructed free area after screens, louvers, and internal restrictions

Access more questions from this quiz

Continue to AL Insulation Practice Questions - Alabama Insulation Contractor Examination Exam for more practice questions and the full quiz experience.

Access More Questions