● 200 CFM large airflow capacity for enclosed room up to 200 sq. ft● 2 sones low noise won't disrupt the tranquility of your bathroom ● Spraying metal housing for longevity and continued performance● Multi-blade wind wheel maximizes ventilation efficiency ● Advanced check valve to avoid backflow of dirty air ● 2 ways to install: direct joist mounting or suspension bracket mounting● Wiring diagram: black-lead wire green-ground wire white-neutral wire