A: Space Cloth identifies the open area between the parallel wires.
B: Mesh Count identified as the number of openings per linear inch.
Mesh count can be shown as either a whole number, fraction, or as two numbers unless the material is a specialty cloth called space cloth - each item is described below:
Whole Number or Fraction
Mesh Count is identified as the distance from center to center of the parallel wires horizontally and vertically.
Space Cloth
This material is measured by the actual open space between parallel wires, known as clear opening, space size, or open area.
Two Numbers (Example: 2 x 2 )
Mesh Count is identified by the number of actual openings per linear inch horizontally and vertically.
Mesh Calculation:
Mesh = 1 / (wire diameter + opening)
Open area = (opening x mesh)² x 100
-Or-
= (1 - (wire diameter x mesh)² x 100
mesh
-Or-
= (1 - (wire diameter x mesh))² x 100
Opening = (1 / # wires per inch) - (wire diameter)