JB Kind Mistral Walnut Internal Door*Please note that JB Kind Internal Doors are supplied without external frames and hardware, however, door frame quotes are available upon request and hardware packs can be found on our website. For a sleek, stylish internal door that complements both modern and traditional room designs, consider the JB Kind Mistral. Featuring crisp, clean lines and a stunning walnut veneer finish, this interior door boasts three ladder style panels grooved into MDF.