Powder coated aluminium uprights for strength. Pivoting one key set of 30 keys for easy accessibility of last 15 keys. All key chain holding plates are numbered. Four holes provided on the uprights inside the box to fix on any wall with four screw and rawal plugs provided. Powder coated aluminium uprights for strength. Pivoting one key set of 30 keys for easy accessibility of last 15 keys. All key chain holding plates are numbered. Lockable for security. Four holes provided on the uprights inside the box to fix on any wall with four screw and rawal plugs provided.