Diamond Cargo 8.5x28 enclosed cargo trailer Flat front 5' tongue 2 5/16" hitch 9990 GVWR Steel frams 8000# tandem torsion axles with electric brakes 12” on center roof members Rounded roof with fiberglass top 16” on center wall members RV latch on side door Side door set back 8' from front Bar locks on side and ramp doors Full size spare tire and wheel Extra tall 7’9” ceiling Fully insulated with 1” to 1.5” rigid foam insulation, including floor (Double floor: 3/4" plywood over 1.5" floor joists on top of original 3/4" plywood floor) 15K BTU Coleman Mach 10 Rooftop AC unit (with option to add heater) Wired for 110v AC with GFCI-protected outlets along both sides and vapor proof lights along ceiling 15A and 30A external power inlets 2x2x4 locking tongue box Scissor stabilizer jacks Rear skid rollers (bogey wheels) Quick Products JQ-3500B Power A-Frame Electric Tongue Jack Accessories include: Rubber wheel chocks Camco Heavy Duty Leveling Blocks Equal-i-zer 4-point Sway Control Hitch Trailer Valet TVXL25 Power Dolly This trailer was originally a car hauler, modified into a mobile exhibit that looked like a submarine. If you want, the flexible ductwork for the HVAC can be easily replaced with the original RV ceiling vent (included). The back wall is framed in 2x3 pine with a 36" wide door opening.