FTA-530: 0.2mm trapezoidal perforation FTA-531: 0.25mm trapezoidal perforation FTA-532: 0.5mm trapezoidal perforation FTA-533: 0.75mm trapezoidal perforation FTA-534: 1.0mm trapezoidal perforation FTA-535: 1.5mm trapezoidal perforation FTA-536: 2.0mm trapezoidal perforation FTA-540: 2.0mm square perforation FTA-541: 4.0mm square perforation FTA-542: 6.0mm square perforation FTA-543: 8.0mm square perforation FTA-544: 10.0mm square perforation |