Diamond or Opening - The open area formed by strands and bonds. Normally the open area is diamond shaped.

Strand width - The single metal strip that forms the perimeter of the diamond. The strand thickness is the thickness of the metal from which the expanded metal is produced. The strand width is the amount of material advanced before forming the next diamond

Bond - The point where adjacent strands intersect. The bond width is always twice the width of the strand.

LWD - Long way of the diamond - indicates the distance from center-to-center of linear bonds in the long direction.

SWD - Short way of the diamond - indicates the distance from center-to-center of linear bonds in the short direction.

LWO - Long way of the opening - indicates the clear opening of the diamond in the long direction

SWO - Short way of the opening - indicates the clear opening of the diamond in the short direction.

Because it is made from a solid sheet of metal, it can never ravel. The slender metal strands forming the open diamonds permit light, heat, air, liquids and sound to pass through - yet present a virtually impenetrable barrier to intruders. Even if cut at one or more points, the remaining strand intersections continue to hold.