A close up of the side of a black boxA close up of the side of a black box


Crimsafes’ unique Screw-Clamp™ technology means that the mesh is securely screwed into the frame and clamped down with a vice-like grip. This makes Crimsafe much stronger than products using a plastic wedge to hold the mesh in place.

When hit by an impact like a kick, Crimsafe products spread the load around the whole frame and back into the structure of the building. This means Crimsafe can resist enormous impacts compared to competing products. Their plastic wedging system only localizes the impact, making them relatively easy to kick out.

Our mesh is made out of 0.9mm diameter 304 structural grade wire strands and is woven together so tightly that each strand supports the others around it. The specifications pertaining to the products we supply are our target specifications…

Unlike many other systems, Crimsafe uses a superior 0.9mm diameter 304-grade structural grade stainless steel wire in our mesh.

When compared to the more common 0.8mm 316 wire, Crimsafe Tensile-Tuff® 0.9mm 304 mesh is 26.5% thicker in the cross-section, which assists its ability to absorb impact energy better at high tensile lives. This is why Crimsafe mesh is more appropriate for security applications.

It is not the actual strength of the stainless steel that is the most influential factor in creating an effective security screen. The measure of how much energy can be absorbed into tensile strength is far more important. Crimsafe security screens are engineered to remain strong when deformed by impact and do not become brittle or give way.

304 Stainless Steel Wire Mesh – Alloy Overview

Type 304 stainless steel wire mesh is the most extensively used material in the industrial wire world. Type 304 (T-304, SS304) is the basic stainless steel alloy and is often referred to as 18-8 stainless steel due to its 18% chromium and 8% nickel composition. Where no specific stainless steel type is specified, it is assumed Type 304 stainless steel wire cloth is acceptable. Some characteristics of 304 stainless steel wire cloth which dictate its wide use are:

  • Austenitic stainless steel.
  • Non-magnetic when annealed.
  • Slightly magnetic when cold worked.
  • Withstands outdoor exposure without rusting.
  • Excellent corrosion resistance in broad range of industrial and chemical settings.
  • Resists oxidation at 1400°F temperatures.
  • Heating permitted between 900°F – 1600°F temperatures.
  • Can be cut, formed, and welded.

Our Tensile-Tuff® security mesh undergoes several hardening processes to make it stronger than ordinary steel of the same diameter and is stronger than any of our current competitors’ mesh in its class. It can withstand higher levels of impact, is more resistant to prying, pulling and knife-shear.

Yes. Our Crimsafe-S-Capes® emergency exit window screens allow keyless exit through windows while still maintaining heavy duty security from the outside. These screens can be hinged or sliding to accommodate a wide range of window styles.

Crimsafe Ultimate has added features that not only increase the strength of the security screen, but also improve the overall look. The key differences are in the greater number of screws fastening the to the frame (double), and the clip-on cover that conceals the screws. This gives the frame a smooth, sleek appearance and provides greater protection from both intruders and corrosion. Compared to most standards for impact levels, Crimsafe regular is five times stronger and Crimsafe Ultimate is seven times stronger.

Crimsafe doors can be made without a mid-rail, however they are recommended as they greatly increase the strength of the screen door and its resistance to prying, and aids in visually identifying the presence of the security screen.

A correctly installed Crimsafe Sliding Door should not be able to be removed from the tracks when closed and locked.

The mesh gap is just under 1/16″, which means that Crimsafe should not impede your view substantially in normal lighting conditions.

Yes, absolutely. Dogs, cats and birds are unable to penetrate the mesh with their claws and beaks.

The holes in Crimsafe’s Tensile-Tuff® security mesh are just slightly larger than regular fly screens. Mosquitoes and larger insects are unable to pass through, and Crimsafe cuts the number of smaller insects that enter your home by about 80%.

Generally not, as black absorbs light and is non-reflective. When you look through the mesh, all you see is light that some come straight through, making it much easier to see outside. If the mesh was any other color, it would create glare and reduce visibility.

Depending on the angle of the sun, Crimsafe acts as a very effective blind without affecting your view. Independent studies show that Crimsafe screens can cut down on solar heat gain by up to 53%, adding to the energy efficiency of your door or window.

Crimsafe® mesh is made from 304 Grade Stainless Steel, itself having a 65 year lifespan. High grade pre-treatment and high durability powder coat technologies are applied to further protect and enhance the finished product. Airborne impurities may build up on the surface of the mesh or frame and may oxidize and cause a change in color, but as long as the powder coating remains intact, Crimsafe will not rust.

Crimsafe can reduce the intensity of radiant heat by up to 59%, and is deemed an ‘alternative solution’ for fire attenuation. Crimsafe screens have a mesh aperture of less than 1/16″ and can prevent the spread of embers. A Fire Safety Report by a Fire Protection Engineer or Certifier is required.

Yes. Our commercial grade product is designed specifically for applications needing additional security, such as banks for prisons. This product line uses five times as many screws to fasten the mesh into the frame as our regular product, and 60% thicker frames to dramatically increase the strength of the system.

Crimsafe commercial grade is an impressive twelve times stronger than the impact levels required by most standards.

Yes. Crimsafe Tensile-Tuff® mesh acts similarly to an air conditioner filter or a pool filter, in that it traps dirt and impurities and requires cleaning on a regular basis.

You should clean your Crimsafe screens in accordance with our Care Guide.

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Security Screen Systems