How about the closure of the security door, my Longyang security door feels like it is still leaking

Updated on Security door 2024-08-02
1 answers
  1. Anonymous users2024-01-24

    There is a sealing strip in the door frame of the anti-theft door, which is used for sound insulation, reducing dry sound when closing the door, dustproof, sealing, etc., depending on the brand, the material is different, but it is impossible to leak air at all.

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