What is the difference between the security door Class A and Class D

Updated on Security door 2024-01-27
2 answers
  1. Anonymous users2024-01-23

    The difference in the level of the security door is mainly in the anti-vandalism time of the security door.

    Class A: not less than 30 minutes.

    Class B: Not less than 15 minutes.

    Grade C: not less than 10 minutes.

    Grade D: no less than 6 minutes.

    Hope it helps.

  2. Anonymous users2024-01-22

    The thickness of the steel plate is not the same. The filler is not the same. Cat's eye is not the same. Locks are not the same. Grade A is good. There is no doorbell.

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