Sheet Metal with Slotted holes
in staggered rows (Form Lv according to DIN/ISO 24 043)
Make your choice
of material on the left.
width W :
The hole width W refers to the narrowest dimension of the slotted hole.
Hole length L :
This refers to the widest dimension of the slotted hole.
Vertical spacing t1 and Horizontal spacing t2 :
This is the center distance from one hole to the next hole in a vertical
or horizontal direction.
Relative free Hole Surface Area Ao% :
This is defined as the permeability expressed as a percentage, based
on one hole together with half the web width
of the adjacent holes. This excludes the
available in three Standard Sizes: Small Format (KF) 1000x2000mm, Medium Format (MF)
1250X2500mm Large Format (GF) 1500X3000mm.