I actually just bought one about a week and a half ago using the bing cashback. Currently in the process of building my keezer (just assembled the collar last night). Let's see... inside dimensions... Compressor step is on the left side. Step length is 11", total length is 36". Step height is 10", total is about 29-1/4". Width of freezer is 16-1/2". Hope that helps.
On a related note, should I offset the taps to the left to keep them over the step and out of the way of changing kegs?