For a vent termination located 20 feet outside, which orientation and feature are required?

For a vent termination located 20 feet outside, which orientation and feature are required?

• A. Nose up with a screen
• B. Flat plate without any cap
• C. Nose down with a screen
• D. Perforated cap with no screen

Answer: (C)

When a vent termination sits outside, the main goal is to keep weather and pests out while letting the exhaust escape freely. Pointing the outlet downward uses gravity to shed rain and condensate away from the opening, reducing the chance that water will travel back into the vent. The screen adds a barrier against insects, birds, and debris that could clog or enter the system. Together, a downward-facing termination with a screen provides weather protection and airflow while minimizing intrusion. A nose-up orientation would let rain into the vent, a flat plate offers little protection against moisture or pests, and a perforated cap without a screen wouldn't adequately block debris or insects.

When a vent termination sits outside, the main goal is to keep weather and pests out while letting the exhaust escape freely. Pointing the outlet downward uses gravity to shed rain and condensate away from the opening, reducing the chance that water will travel back into the vent. The screen adds a barrier against insects, birds, and debris that could clog or enter the system. Together, a downward-facing termination with a screen provides weather protection and airflow while minimizing intrusion. A nose-up orientation would let rain into the vent, a flat plate offers little protection against moisture or pests, and a perforated cap without a screen wouldn't adequately block debris or insects.