LPD Kilburn Unfinished Oak Internal FD30 Fire Door. Made from solid oak, this internal door has a traditional style, with raised panels and accentuated vertical lines. The FD30 has three full-length panels and 10mm wide lippings over a solid core. Un-finished, this door can be decorated to suit more contemporary tastes. The Kilburn is the natural oak alternative, offering a timeworn look with beautiful warm tones. Un-finished, solid doors are perfect for all internal areas including the living room, dining room bathrooms and bedrooms. The Kilburn’s distinct grain patterns add interest to this interior door for a traditional feel that will complement any decor. With this door, you can fit it in just about anywhere you want however it is recommended that 3 hinges are used on each door, we recommend using the matching external door for the best effect.