These pouches are extra-wide so the holes won't pass
through the document you have laminated. The corners
of the pouches are clipped to avoid the metal tabs on
binders.
Thickness refers to the total thickness of the plastic pouch. So a 6-mil pouch has 3 mils of plastic above the paper and 3 mils below the paper, for a total of 6 mils of plastic. (One mil equals 1/1000 inch.)
