Offering a huge line of aluminum products such as gable vents, half round window trim, and shutters. Ordering, buy a gable vent from Onyx Xteriors is a worry-free process. All gable vents are categorized for you to find the gable vent you need quickly. As we are a custom aluminum manufacturer, we have every fixed louver aluminum gable vent possible available. Onyx Xteriors was started back in 1996 when the owner began to see many products not readily available for the construction industry. And the products that were available were bland and left each home looking the same. Adding aluminum product options like these really help the industry by opening the door for better and different aluminum products. The custom sheet metal shop that has become Onyx Xteriors will customize any aluminum gable vent or half round window trim or any other house trim piece you need. Our mission is simple: to provide the best aluminum products and customer service to our customers at the best prices possible. We take great pride in our company, our commitment to customer service and in the products we sell. Our online store is designed to provide you with a safe and secure environment to browse our product catalog. Manufacturing gable vents in triangle, square, round, tombstone, and many more shapes. Our triangle gable vents are the strongest .019 aluminum on the market. For any louvered gable vents, shop our gable vents department. Half round window trim made of metal, aluminum is here also in our half round window trim department. Want something else? We offer a variety of custom and specialty products.