"Duane Bozarth" wrote in message
...
Leon wrote:

"Wes Stewart" wrote in message
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Why? If the cabinets have backs, and are screwed to the studs, why is
this less reliable than screwing a piece of plywood to the same studs?

Because the studs are only about 1/16" thick. The screw could easily be
pulled back out compared to being screwed in to 2 or 3" of wood.

What's the plywood attached to?

The plywood is on the back side of the front face of the stud. The screws
that hold the plywood go through the steel first and then into the plywood.