Exterior Shutters On Corner Windows . Louvers during the late 1700’s were for ventilation while keeping out the sun. Check out these stunning houses of all styles with exterior shutters (black, red, blue, green and gray examples). mounting shutters in corner Window shutters exterior, Shutters from www.pinterest.com Light duty plates and backplates ; Paint colors for exterior shutters are infinite, and selection can be daunting. Or print out an image of your house and one of some shutters and cut and paste them onto the space to see how it would look.