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Expanded Metal Terminology


 
PERCENT OPEN AREA
The open area necessary in determining the light or air passage. The number is an approximate figure
 SWD
The distance from a point on a bond to a corresponding point on the following bond measured across the Short Way of Design. This is also sometimes referred to as "pitch SWD"
LWD
The distance from a point on a bond to a corresponding point on the following bond measured across the Long Way of Design. This distance is also sometimes referred to as "pitch LWD"
SWO
Short Way of Opening, the distance measured from the inside of the bond across to inside of the bond
LWO
Long Way of Opening, the distance measured from the inside of the bond across to inside of the bond
BOND
The intersection of two strands and is always the width of two strands
OVERALL THICKNESS
The actual measurement of the thickness of the mesh measured at the bond



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