Lark enclosed trailers?

[Run to Rund]

Not familiar with that brand but in general look for:
Dexter Torflex axles, 5000 lb
10,000 GVW as some states require CDL etc. at 10,001 lb.
2x6 box tubing frame, not C channel
square nose is preferred over V nose for wind resistance and stability, according to many on yellow bullet
(fwiw, I got a Wells Cargo)