They provide the dog with a stronger sense of security but still allow visibility and airflow.

Instead, a simple set of stamped metal slots allowed airflow into the engine compartment.

The "tuned port technology," as Shure calls it, allows better airflow through the small drivers, improving low-end notes and producing a clean tone.

This would allow enough airflow to the engine for take-off but reduced the chances of the engine sucking up objects from the ground.

The reduction in fuel tank size to 195 litres for the 1986 season allowed the car to be smaller, allowing better airflow to the rear wing.

Typically they are (relatively) large, and have larger spaces to allow freer airflow.

Initially, refrigeration was achieved by having slots in the sides and ends of the wagons, allowing airflow when the train was moving.

Generous mesh vents at top allow adequate airflow and reduce condensation.

Half or more of the trench is filled with "green" (unfired) bricks which are stacked in an open lattice pattern to allow airflow.

This allows continued airflow through the fire while providing optimal heat.