Originally Posted by tcwilliams
I thought the light weight came from the fact that it is 3/16 inch thick instead of the readily available 1/4 inch stuff.
That plays a part in it too, along with all of the aluminum extrusions and the like. The "bins" under the front gaucho on mine are made out of thin aluminum sheet I would guess .024" haven't actually put a mic on it. Then you have a thin plastic tub that slides in, and they are very light weight. The same type of construction is also used for the storage under the beds too.
If you want to have fun
weigh a sheet of 1/2" cabinet grade plywood and a sheet of CDX sheathing. The CDX is heavier due to the grade of veneers used. The PT's boats of WW II were made of plywood, very light weight and strong for it's weight.