Dyed Surface Colours Dimension 500 x 500 mm Units per square metre - 4 Units per pallet 25mm - 164 (41m²) Units per pallet 50mm - 76 (19m²) Thickness 25mm or 45/50mm Top layer 25-30 mesh Bottom layer 8-12 mesh Unit weight: 25mm - 5625g and 50mm - 11250g