How hot do dryer vents get and what precautions should be taken to ensure safety?

Dryer vents can reach temperatures of up to 135 degrees Fahrenheit. To ensure safety, it is important to regularly clean the vent to prevent lint buildup, use metal ducts instead of plastic ones, and ensure proper ventilation to prevent overheating. Additionally, it is recommended to install a vent cover to prevent pests from entering the vent.