Cornies are 8.5 inches in diameter and 25 inches high. Allow at least another 2 inches for lines and 1/2 inch between them for ease of loading. Depending on what type of taps and their location, you will have to either increase clearences or leave an empty spot. Many chest freezers have a "shelf", which is actually the compressor housing. It's a good place to put the CO2 bottle and manifolds.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
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