Ensure proper ventilation in your home with the Builders Best 012633 Black Metal Roof Vent Cap. This item is made by a nationwide high-performance manufacturer of quality venting solutions and is designed to meet specific constraints of areas such as dryer venting bathroom fan venting fresh-air ventilation and general venting. The roof exhaust vent cap has an electrically bonded epoxy finish for durability so it will last through years of use. It even has a back-draft flapper and a 6 collar for optimal performance. The flat roof vent cap has a removable screen that will ensure proper ventilation through your roof. This item is lightweight and easy to install for do-it-yourselfers so you can put it to use in no time.