So had to scrap my FIL's 2004 Explorer. Still have a rear hitch mounted cargo tray that mounts into the Explorer's 1-1/4" receiver. Free to good home. Local pickup only Orange/Rockland county. It's in good shape probably only used a few times. Don't have measurements but ran pretty much across full width of Explorer. Maybe 18-24" deep. Sorry I don't have pictures at the moment...