Well lets see it can't weight more than about 150 to 200 # cause I can leift it by my self if I get in the right spot. Be sure to use Tiet Bond III it is a true waterproof adhisive and I have tested it to the max and it works. The box was figured to be done with 3 sheets of ply, I don't have it here but I think it is about 16" tall and 32" wide that is 48" total 1 sheet of ply the side is the fall off of the 32" and the third sheet you cut in half to make the sides and the top after you rip it at the 32" point. the end panels are solid wood for looks Spanish Cedar is just as good as Mahogany in the weather and exterior grade duglas fir ply is almost the same as marine excpt there are ocasonal voids. Have fun I was gooing to see if I could maket these but they would still coast a pretty penny the finish takes as long to do as building the box as I said I do this for a living so it didn't take as long as you would think besides if I built another one it would take less time as this is the prototype and alot of bugs were worked in my head before I went to work I have buit these in the past for windsurfing and sone of them are still around after 15 0r 20 years they are water tite and don't leak cause they are buit pretty much like a boat but for land. Have fun Alex