They offer a good way to increase cross ventilation in an attic without altering the roof line.

Underground trains were kept running through the station to increase ventilation.

Temperature and airflow of every surface were optimized to increase ventilation.

Anything you can do to increase ventilation or to let in more sunlight will help keep the moss from coming back.

If that is not possible, install fans to increase ventilation and circulation.

This increases ventilation on hot, humid summer days.

The roof was originally designed to mechanically open to increase light and ventilation to the enclosed space.

Driving a bicycle increases minute ventilation by a factor of 2 to 4 depending on the level of exercise involved.

Both types of tunnels often have provisions to increase ventilation under emergency conditions, such as a fire.

The mesh side panels increase ventilation and comfort.