Choosing a new internal door can be very difficult and time consuming, we have a vast range of Internal doors in all shapes, finishes, sizes and styles. Shop for your new Interior Doors today. Most of our internal doors are manufactured using engineered component parts. This enables us to provide a product that offers a solid feel, combined with all the advantages that engineering brings in terms of strength, consistency and stability. All of our engineered doors are faced with veneers and matching lippings.