This is essentially a brand new 2015 custom trailer made by Husky Cargo, FL. I ordered this to transport my 2 racing karts and equipment, about 1,000 lbs. In hindsight, I should not have upgraded it as much as I did. It will easily haul 7,000 lbs and has proven to be very heavy-duty and way more then I need to haul my karts. Definitely a case of more not being better! I have only used it around 10-12 times! I want out so I can get something more appropriate, but don't have to sell. Here are the options: - 3-M screwless walls upgrade; .030 thick exterior panels; smooth finish - upgraded 3-M roof - 6" cut off the top to allow it to be parked in a standard garage for an added layer of protection so you don't have to unload it every night because you're worried someone will steal all your stuff. It is 69 inches floor to ceiling inside. I'm 5'7" and have no problem. - heavy duty frame option with steel tube instead of the weaker Z-channel - 1 x 1-1/2" tubing wall stud upgrade mounted on closer 16" centers - tongue made of heavy duty tube, not the usual C-channel - an extra, heavy duty triple tongue tube frame member welded in - 2 recessed floor boxes; one for the spare and the other for misc equipment like a jack, lug wrench, etc. - 2 florescent lights and 2 outlets; 115 vac (via a single extension cord) - one 12 volt convenience light - RTP rubber floor - aluminum diamond plate rear ramp and loading flap; lockable - E-Track on both sides of the floor and side walls (inside) - Premium side door with RV flush lock - full exterior 16" body wrap of aluminum diamond plate stone guard - looks really nice - chassis bottom fully painted with solvent based paint - floor bottom is upgraded 3/4" sanded pressure treated plywood - 3/8" quality sanded plywood walls - flow through vent system - Rockwell Equalizer Torsion Axles; 3,500 lbs each, with electric brakes - break-away emergency brake system including battery - 2-5/16" tongue - exterior lights are LED - rear stabilizer jacks NOTE: Because 6" is cut off the top for clearance, there is no AC, but you can easily install one.