A number of different requirements need to be fulfilled for a window to qualify for a specific burglary resistance class. Security windows by heroal meet the these requirements by their number of locking points, lockable window handles, penetration-resistant safety glass, fittings with mushroom locking bolts as well as a pry-proof protection. In addition, the material aluminium plays an important role for the stability of the security window. Finally, the professional installation also makes a significant contribution to the burglary prevention a window offers.