Nylofor Medium Low to medium securityAperture: 100 x 50mmWire diameter: 3.65mm Available height: 1.2m, 1.8m, 2m Nylofor 3M Medium securityAperture: 200 x 50mmWire diameter: 4mm Available height: 1.8m, 2m, 2.4m 3510 Econo Medium securityAperture: 76 x 25mmWire diameter: 4mm vertical, 3mm horizontal Available height: 1.8m, 2m, 2.4m 3510 Medium securityAperture: 76 .2 x 12.7mmWire diameter: 3mm Available height: 1.8m, 2m, 2.4m, 3m 358 High securityAperture: 76 .2 x 12.7mmWire diameter: 4mm Available height: 2.4m, 3m Double Skin Ultra high securityAperture: 12.7 x 12.7mmWire diameter: 4mm Available height: 2.4m, 3m 2D Very high securityAperture: 7.6 x 12.7mmWire diameter: 5.6mm vertical, 4mm horizontalAvailable height: 2.4m, 3m