Inviting Home - Vented Louvers - 28-5/8&quot;H - functional vented louver 19-5/8&quot;W x 28-5/8&quot;H x 1-7/8&quot;D Functional louvers specifications: louvers designed for exterior application. Outstanding durability functional louvers are made of high density polyurethane. These louvers are lightweight durable and easy to install using common woodworking tools and can be finished with any quality paints.