Eric, It's a 6 x12. I bought it from a guy who was getting out of the maintenance and into the installation and didn't need it any more. He bought it from the guy who made it. I guess the "manufacturer" worked for an outfit that recovered aircraft and had alot of extra aluminum. The skin is all riveted alluminum on a manufactured trailer. Inside is all 3/4 tubing to form a skeleton. I need to put some plywood up on the walls for mounting brackets for my rakes and trimmers. I was going to do it in the spring but the weather warmed up about 3 weeks earlier this year and I haven't had time...been too busy cutting and working my teaching job. I'm not sure it's clear in the pics but the upper "barn doors" are on pin hinges so they are removeable. When I off this summer I'll just leave those doors off for the day. It works SO much better than the old trailer. I've got my garage back and I don't have to waster a half hour on each end loading and unloading. The only PITA is refueling. Got work a better way of doing that. All in all I'm pretty happy with it. I'm going to repaint the trailer this summer.