Louver Vents - A Breath of Fresh AirFunctional (venting) louvers and decorative (non-venting) louvers come in a multitude of shapes to fit most architectural styles. Decorative louvers have a solid one-piece design that does not allow air to pass through and are for aesthetic purposes only. Functional louvers feature slats with a steep 45-degree angle to help protect interiors from precipitation and provide optimum ventilation. All of our gable louver vents are made of high density polyurethane material, assuring you of years of beauty and quality. Check out the Photo Gallery to see some of our maintenance-free louvers installed on homes across the U.S. Round | Oval | Half | Circle Top | Eyebrow | Rectangle | Peak/Gothic | Diamond | Octagon | Quarter | Triangle Louver Installation Instructions | Photo Gallery | Custom Louvers |