It's a 6' box which juuuust fits he 29'er. I have never camped in it, I usually borrow my dad's camper van if I need to, I like the luxury! Funny though, the guy I bought the topper from said he camped in it all the time. The serial number on it indicates it is from 1986, so it's got some years on it! Sure wish they still made small trucks like this so at some point I'd have something similar to buy. But no, every small truck is like 7/8ths full size. I'd never buy a truck with less than a 6' box though.
Oh, this is what the rack looks like that I built to hold them upright. Nice and light, so easy to yank out when needed.