National Lock & Safe believe that the best form of defence is to prevent the attack in the first place. Alarm and surveillance systems can help to secure your property but many times they do not stop a break-in as criminals know they have several minutes before anyone can respond.  
Our window grilles are both a visual deterrent against possible break-ins and at the same time a physical barrier against break-ins. Our insurance approved installation method uses high quality fixings that are security sealed to prevent unauthorised removal. All Grilles are powder coated to a high standard of finish in any colour of choice. 


Our insurance approved fixed steel grilles for windows and doors are constructed out of solid square steel bar (either 12mm square or 16mm square as required) for internal use or solid round bar (either 20mm or 25mm) for external use. The internal Grilles can be made to follow the existing lines of any window creating a high security solution that is aesthetically pleasing. 


Popular with shops and other high street premises, our mesh steel grilles can be manufactured to fit any size or type of window or door. They can be either fixed or removable (locking removable panels). Our mesh grilles feature a heavy-duty angle iron frame and 1"x1" or 2"x2" weld-mesh infill. One of the advantages of this type of grille for commercial businesses is that when in place visibility is still good through the grille. 


Collapsible Grilles are the perfect solution for doors and windows. The grilles are normally installed internally but can be used externally if required. Collapsible Grilles slide open and close on a track system. Making an ideal solution where fire escape may be required. When they are open they simply push back to form a neat curtain. When they are closed they are locked with high security press bolt locks and have a anti-jemmy strip to prevent attack. 
Ideal for many applications including: domestic properties, where a window can be opened for ventilation, a Shop that requires window security but would still like to show a window display or maybe for locking off an area of a building that is not in use outside of certain times. Whatever the use, Collapsible Grilles can be tailored to suit all applications. 


Quotations are free of charge and we will take all of the measurements required. All of our installations are taken care of by our expert teams. 


Why not ask us at National Lock & Safe to carry out a security check of your premises. We can advise you of the minimum requirements for insurers or what would be the best lock for a particular application. We can install a lock onto almost anything. 


Fill out our contact form and we'll call you back! 
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