Knife Shear Test: AS5039-2008
This Australian Standard test simulates a knife attack on Invisi-Gard as a burglar tries to cut through the screen. The test aims to recreate the effect of someone attacking your doors with a Stanley knife or similar.
During this test, a specially designed machine draws a knife blade along a line down a panel three times. After each draw, the used blade is replaced with a new one. The sample fails if a continuous cut of 15cm or greater is achieved after the third draw. Invisi-Gard passes this test in both the warp and fill directions, unlike many imported meshes which only pass in one direction.