Retractable security grilles & gates, sliding security grilles & gates, x-gates & grilles, Folding gates & grilles, security gates & grilles and much more. No matter what you call them they are all used for the same reason, as physical deterrent against intruders.
So, for arguments sake we will call the collapsible gates & grilles. Collapsible gates and grilles have become very popular for both for residential properties and commercial properties alike. They are not only a good strong choice against intruders, there are also very aesthetically pleasing on the eye.
Also, unlike fixed bars they can be fully retracted fully open which has many benefits for both residential and commercial properties. Here are just a few of the benefits… you can still use your windows or doors as fire exits, once open you can still have a clear view, being able to carry large objects or furniture through once open, the list goes on.