While it may not be made now, but in the early 70's it was available in 60"
widths, primarily used in commercial buildings that were built on a 5 foot
module, which the one I worked in was. However history doesn't help you much
AFAICT (and to my surprise) the only sizes I see are 48 and 54 inches in
width for standard gypsum board. I thought there were 60" boards
available but apparently not so.
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