Made in Canada and designed by Victory, our vent caps are made with high quality weather resistant galvanized steel. Unlike other brands, our caps are made with an appropriate sized opening to allow sufficient airflow without restricting it and causing a drop in efficiency for the range hood. Included with all of our vent caps is a mesh screen to keep out critters and debris, and a spring tension damper that stays shut when the range hood is off to keep out cold air.