Premium steel construction ensures erosion and oxidation resistance, enhancing security for aluminum door with a multiple layer not theft mechanism Perfectly safeguards patioes door, balcony access, and main entrances against forced entry attempts in weather conditions Combines grade steel components with reinforced deadbolts technology, durability and peace for modern security demands Specifically engineered for smooth compatibility with 8535 / 8520 / 8530 series door, featuring tool without installation and accuracy alignment for easy setups Ideal for homeowners and property managers search strong, tamper resistant locking solution for residential or commercial aluminum framed entry systems, Manufacturer: Oxxggkao