2006 Knapheide KC96M1478J enclosed utility body. 61 interior clear height. Fits 56 cab to axle single rear wheel trucks. I had it on a 2006 F350 11,400 GVW for about 9 years and now its on a 2015 same truck both diesels. Has fuel and DEF filler cups integrated on drivers side. It will be off the truck ready for pick up or local delivery by mid-February. Custom roof rack has three rack strap ratchet tie downs. Had rhino liner sprayed on bed floor, up walls, and in bottom of all cargo compartments when brand new. Repainted when installed on 2015 truck. Fits a stock 8" bed pickup. Always kept oil undercoated. No serious rot.