This is your typical rectangular shaped gable
This gable vent is made from galvanized metal and has the correct screening behind it to prevent insects or small animals from entering into the attic.
The gable vent has metal louvers that run horizontal and at a steep angle, to prevent water from entering the attic, while it is raining.
This metal gable vent is trimmed out with wood and can be installed in stucco as well.
Most gable vents can be purchased at your local home improvement centers or lumber yards.