We just took delivery of ours, but won't have access to it again until next Friday evening. If you don't have your answer by then PM me to remind me and I'll measure it up for you.
2010 Jayco Eagle 351RLSA
2011 Nissan Titan 4x4 (don't worry, I don't pull the Eagle with it!)
Currently shopping for a Silverado 3500 Duramax
Oh, and I have a tent... Somewhere around here....