In the new Vision model #600s, the ones they have for $299 shipped, of which I bought 4, they have removed the protruding round shroud that is in the other models. The only thing that takes up ceiling space is the vent in the upper back of the enclosure, and it sticks out maybe 8" into the cage and 4 or 5" down. These are rough estimates, as I haven't measured them exactly. I like these better than the models with the rounded shrouds, as those don't do a lot of good for snakes anyway. All in all, for $299 shipped, these cages are great. The ones I ordered did show up with a couple dings here and there on the door tracks, but they were easily fixed with a pair of pliars.
-Chance
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Chance Duncan
2.2 Retics (1.0 Tiger Het, 1.0 Lavender, 0.1 Dark Lavender, 0.1 Normal Het)
1.1 Olive Pythons
1.1 Ball Pythons (Het Albino)
http://www.rivervalleysnakes.com