Plywood is another type of structural engineered wood panel. It comes in four-by-eight-, nine- and 10-foot sheets that range in thickness from 1/8 in. (3.2 mm) to 1 1/4 in (31.75 mm).

There’s plenty of plywood in Ferguson, Mo. Wood sheets already cover the windows of many shops and stores in town, places hunkering down against the unrest that’s expected once a grand jury ...