... holes of perforated hole mesh is Round , Rectangular hole , Square , Triangle , Diamond , Hexagonal , oval, Cross, Slotted, ... and configurations, Uniform sound abatement, Attractive appearance, Light weight, Durable, Superior abrasion resistances, Accuracy of size . ... you regard helpful SpecificationMesh WidthMesh LengthWeight (kg/Square meter)ThicknessHole widthHole lengthWire width0.5mm2.5mm4.5mm0 ...