The following comments may assist you with your project with regards to your security screens.

Crimsafe uses 304 grade .9mm hi-tensile stainless steel. Invisigard uses 316 grade .8mm marine grade stainless steel. Both products have a 10 year warranty. Over a 13 year period of sales Crimsafe has had a warranty claim record of less than 1 in every 1,000 items sold and a 100% clean record with Fair Trading offices. 316 grade stainless steel is not stronger than 304 grade stainless steel – in fact the reverse is true. 304 grade is used in kitchen sinks, pots and pans, knives and forks, commercial kitchens etc
Crimsafe uses 304 grade and not marine grade 316 – we build security, not boats.

In recent tests conducted by the unsw@adfa (the University of New South Wales at the Australian Defence Force Academy) in Canberra the unsw@adfa concluded that in its opinion the Australian Standard set for impact tests on security screens may not represent a real life attack. Crimsafe has commissioned unsw@adfa to conduct additional bio-mechanical studies to determine a recommended impact level for security screens. We believe that the new recommended impact level will be around twice that of the existing recommended level. Further, unsw@adfa said Crimsafe passed impact tests up to 12 times that of the impact force equivalent to the AS impact level. Of 9 other brands tested 7 failed to meet the current standard impact level

I would recommend that you obtain a sample of both screens around 400mm x 400mm – and stomp on both in the centre of the screen. Crimsafe uses a patented screw-clamp system to keep the mesh attached to the frames – other brands use wedge systems

Crimsafe also has a “quick release” exit screen called the “Safe-S-Cape”.

If I can be of any assistance in providing you with any additional information I would be delighted to do so.

Ken Millard
General Manager