nugget
Observer
Sorry Phil..here in Aussie they call them Space Cases and they are distributed by ARB as well as others..not sure about the US. This is a link to an Aissie company which is a bit out of date..2007 but gives a good idea about the variations available. Mine are 1100X550X225. They come standard with the shut down clips on the front but provision for them on the side so I drilled out the rivets and shifted them to the side so I could mount it right against the roof rack side rail.
http://www.spacepac.com.au/Brochures/Cases-Coolers/Spacecase/Storage-Containers_5pg_wp.pdf
http://www.spacepac.com.au/Brochures/Cases-Coolers/Spacecase/Storage-Containers_5pg_wp.pdf