To Purchase and Install The Front Door Suitable for Your House, You Must Take Into Account Saveral Choice Parameters. The Main ONes are as follows:
1. All Doors Are Classified Into 5 Groups. The classification from the first to the first group depends on the Degree of Strength of the Doors and Resistance to Various Physical Influenses. For Example, The Door Related to the First Group Is Not Exposed to Hunting Rifles and Cold Weapons, And the Doors of the Fifth Group Aresed to Shots From The Kalashnikov Machov in gun.