50 is parallel to the right side surface 38 in another embodiment as shown in fig3 b a portion of the internal surface 50 is parallel to the right side surface 38 and an another portion of the internal surface 50 tapers away from the right side surface 38 as best shown in fig1 and 2 the internal surface 50 has an upper portion 52 and a lower portion 54 the upper portion 52 is attached to the inside of the hood 42 and the lower portion 54 is attached to the inside of the lower container 40 when the hood 42 is opened to expose the cabinet interior 16 as shown in fig1 and 2 the draft chimney 10 is separated into two pieces however when the hood 42 is closed as shown in fig3 a and 3b the upper and lower portions 52 54 are joined together to define the entire length of the draft chimney 10 the length of the draft chimney is commonly refer to as a flue and is described in greater detail below in order to insure the upper and lower portions 52 54 of the internal surface 50 are properly joined together each time they come into contact with each other the ends of each portion are bent back in a widthwise manner to define flanges 56 and 58 the end of the upper portion 52 of the internal surface is bent inward and the end of the lower portion 54 of the internal surface in bent outward toward the right side surface 38 to form a seal when the hood 42.