Glendale installed different axles under different size trailers during any given model year, so there is no way to answer from here.
As suggested; if you go over to the Titanium Forum (www.titaniumrvowners.com) and register, someone will tell you how to look up the manufacturer's info in the files section.
Otherwise you need to get the axle serial number (one number covers the set) off of the center of one tube and call Dexter.
I'm not clear just who is going to be weighing it or why, but I don't understand why they want axle info.
I have run across CAT Scales with various trailers three or four times over the last ten years and they never cared what I had for axles as long as I paid the fee.
A