FTA-250: 0.12mm trapezoidal perforation FTA-251: 0.2mm trapezoidal perforation FTA-252: 0.25mm trapezoidal perforation FTA-253: 0.35mm trapezoidal perforation FTA-254: 0.5mm trapezoidal perforation FTA-255: 0.75mm trapezoidal perforation FTA-256: 1.0mm trapezoidal perforation FTA-257: 1.5mm trapezoidal perforation FTA-258: 2.0mm trapezoidal perforation FTA-260: 3.0mm round perforation FTA-261: 4.0mm round perforation FTA-262: 5.0mm round perforation FTA-263: 6.0mm round perforation FTA-264: 8.0mm round perforation FTA-265: 10.0mm round perforation |