MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
This is customizable, so you can generate your own 3D model that fits your can. Try the “Open in Customizer” button (or this link). Because the Thingiverse website is very unreliable, you may prefer to download the .scad file and follow these instructions instead.
I'm not sure what you mean by extending the 6 feet. If you mean dividing all the compartments into 6 sections, there is not much use in doing that because the convection happens only vertically under normal circumstances.