A wickless cartomizer (2000) includes an outer shell (2001) surrounding an inner shell (2002) in a spaced configuration to form chamber (2300) for holding vaporizable material between the outer and inner shell. The cartomizer includes a channel (2005) having an opening (2004) at the bottom portion of a middle wall (2015) to allow the vaporizable material in the chamber to flow into the channel such that the vaporizable material within the channel is substantially level with the vaporizable material in the chamber. The inner wall (2005) of the channel includes a heater (2009) to heat the vaporizable material stored within the channel along the length of the inner wall to provide a more even temperature distribution through the vaporizable material. As the vaporizable material heats and becomes vaporized, the vapor rises and passes through a vapor exit opening (2011) in a top portion of the inner wall of the channel.
