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
- 4.7 - 2.4 8.5* 8.5 // width of sheet 1500 x 25000 1500 x 25000

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