I don't know I would have to look through the paperwork tonight, but I'm not trying to prove anything, my post stated that it was an 18' +2' dovetail equipment trailer that has 2-7k axles with brakes on both axles that weighs in at 1990 pounds, there were a blue million of them made in these parts back in the 90's and mid 2000's and while I have never had 12k on it , it has hauled any and everything under the sun probably up to about 7 or 8k and to this day it hasn't warped or bent, I bought it from a local trailer manufacturer brand new in 2006 but I will look tonight to see what any of the paperwork says.