The Terra started out as an entry level MH, with one step up into the interior. The basement storage, as it is, is like those on a TT, or 5th wheel. The walls were 1.5" thick, I don't think they had enclosed holding tanks, but could be wrong on that. They were only 8 foot wide on the outside. In 06, or 07, they replaced the Flair, which was really a Bounder, with less standard appointments. They have since reverted back to near the original Terra construction. If I'm incorrect, maybe current Terra owners can chime in. We looked at the Terra in 04, but when to a true Class A instead, as you got much more than the difference in price showed. It reminded us of our TT with a drive train.