Shape and size of holes
R 10 – Round
Symbol R followed by diameter oh hole
Arrangement and pitch of holes
Round holes are usually ordered with arrangement 60° staggered pitch,since it is characterised by a high rigidity of the perforated metal even with a tolerable open area.
It is available upon request the arrangement with square pitch , usually indicated for commercial forniture,exhibitor panels and aesthetic uses (false ceilings, building facades,etc.)