The DL301 design has louvers in the upper section and a raised panel in the bottom. The top half can remain open while the bottom section is closed. Our Dutch louver doors have open louver slats which allow air to flow freely. Louvers are made a full 3/8 thick by 1 5/8 wide. They can be used for both interior and exterior purposes. Our Dutch louver doors are often used around pools, closets and storage rooms inside the home or on mechanical rooms. Tops and bottoms can be mixed and matched. We custom make each door to fit your opening requirements. Every Dutch door design can also be made into a double door unit. Do not hesitate to contact us with any questions you have on your project!