Which type of screens are not permitted at the termination of a dryer vent?

Dryer vent screens are designed to prevent lint and debris from exiting the vent while still allowing air to flow. However, these screens can become clogged with lint, restricting airflow, which poses a significant fire hazard and can impede the proper functioning of the dryer.

The installation codes for dryer vents specifically prohibit the use of screens at the termination point to ensure that the exhaust air can exit freely and prevent any build-up of lint. This regulation is based on safety standards aimed at minimizing the risk of fire and improving ventilation efficiency. Proper ventilation is crucial because it helps prevent excessive moisture buildup which could lead to mold growth and other issues.

While other types of screens, such as flat or mesh screens, may have their own specific applications and requirements, they do not directly relate to the same safety concerns associated with dryer vent termination. The crucial takeaway is that any type of barrier that could obstruct airflow, particularly dryer vent screens, is not permissible at the termination of a dryer vent due to the potential risks involved.