I don't know where you would get such a size of a 5 gallon pale? I've had many, many 5 gallon pales over the years and have never heard or seen of a 12" wide 5 gallon pale. They pretty much have a standard size as one will fit into another. I have both 5 gallon imperial (22.6 litres) and 5 U.S. gallon pales. The 5 gallon imperial pale measures on the inside at just under 11 3/8" on the top and just under 10 3/8" on the bottom. So even in the larger imperial 5 galloon pale an 11" fish will have a curled tail when on the bottom of the pale. The 5 U.S. gallon pales are not only shorter but also a little narrower. Measured on the inside, they are typically 11 1/8" on the very top and just under 10" on the bottom........an 11" fish will most definately have a curled tail when on the bottom of this size of pale.Modest_Man;4906578; said:longer than a 5 gallon bucket is wide (12") so I called him 13".