listed is a 2011 Forest River Shockwave 21 footer. Its 25 feet from back to tongue though. This trailer is in great condition. It has an onboard Onan 4000 generator that you can start from inside the trailer. Onboard fuel tank to keep the generator running no problem. 2 water tanks, grey tank for showers and sink water, and black tank for the toilet. This toyhauling trailer sleeps 4 people no problem and 3 people very comfortably. There is a full size bed up front, and pull down couch bed in the back. Also, there is room for a twin air mattress on the floor if needed. This will be great for camping with amenities or boon docking! We offer delivery for an additional fee, or just pick it up