thickness (t) height (h) app. open area app. kg/m2 app. min. grid (p) diameter single relief waterflow direction std. width x length max. width x length
mm mm % mm mm mm mm
1 8 29.62 2.25 33.0* 33 // length of sheet app. 1130 x 4000 or app. 1130 x 5000 1130 x 8000

*The grid (p) is fixed on this measure.