Kevin - Yup, 4 ft long, 3 feet in depth, 2 feet high
Pete - 8x3x3 is a great tank, but not an option at this time.
jtarmitage - a 6x3x2 would be perfect. I likewise have a slight issue with a 4 ft tank, but the depth is great.
As for fitting in my house, the 2 ft in height allows it to fit through doors when tilted.