Without good and reliable doors today. Doors are the protection of their home from unwanted encroachments on the property of a house or apartment, and preserving personal safety, and peace, without which neither comfort nor comfort is impossible. Doors are an entrance to the fortress called the house ..
Today, doors to the house or apartment are made of metal. And what should they be, these doors? And how to choose the best metal doors?
Metal doors have their own classification. The first class includes doors that can protect against hacking without using tools. If the cracker has tools, the door of this class will not last long, no more than 2 minutes.
The second class includes metal doors capable of protecting from hacking using conventional tools and powerless against tools of special. These are electric drills, perforators and other equipment.
The third grade of doors with increased protection reliably opposes amateur crackers, but a professional for about 8-10 minutes has the opportunity to cope with them.
But the best metal doors are those that do not break through anything, and which is almost impossible to open. They should opt for them.
The best metal doors have a complex lock, and most often two, moreover, of different systems. The crossbars of such locks go out in different directions and are hidden into special rotating tubes that cannot be cut. Installation of additional cheek and valves will enhance the reliability of such doors.
The best metal door is the door, in no way made by artisanal. Only factory production using modern equipment and technologies. It is very good if such a door has thermal insulation and noise -absorbing properties.
And even the best metal doors, except for the above characteristics, are not amenable to the effects of aggressive external environments, are not afraid of mechanical damage, have a long service life and an attractive appearance. These qualities can give the door a powder coating of polymers. It will not be superfluous if the metal door is varnished.
And, of course, the best metal doors are simply required to have the right structure, but should not have distortions and deformations.