What type of vent cover is often recommended for dryers to prevent fire hazards?

An exterior vent cover is often recommended for dryers to prevent fire hazards because it allows for the safe and effective expulsion of lint and hot air from the dryer while minimizing any chance of combustible materials entering the duct. Exterior vent covers are designed to have a sufficient opening that grants an unobstructed exit path for the heated air and potentially flammable lint, which can accumulate in the ductwork if not exhausted properly.

This type of cover typically features mechanisms, such as flaps or louvers, that open when the dryer operates and close when it’s not, which helps to prevent outside debris from entering the vent. Proper installation of an exterior vent cover can significantly reduce the risk of lint buildup, which is a major contributing factor to dryer fires.

Other types of vent covers may not provide the same level of protection or efficiency in directing airflow and may also be more prone to becoming blocked or damaged, which can lead to increased fire hazards.