MEFA Security Lock – Top

Will this lock be suitable for my mailbox?

This lock is to be used with mailboxes that have been manufactured by MEFA and feature a lock aligned to the centre and situated at the top of the opening door. Please check that your existing lock appears visually the same as this lock.

Do I need a lock?

We will always advise you on the best and safest route to take when ordering replacement keys and locks. If you are new to a property that has previously been occupied then we suggest you change your lock as the previous occupiers may still hold keys.

How do I fit a MEFA mailbox lock?

Replacing the mailbox lock is straight forward and requires a basic level of DIY skill. Please use the following instructions to guide you through the process, or give us a call for any advise.

Important: Please work in a safe manner using relevant PPE guidelines (safety glasses & gloves)

• – Fit a 3.5mm diameter steel drill bit in a power drill to use.
• – Place the drill bit into the hole of the lock (be careful not to damage the body of the mailbox), drill straight and apply consistent pressure.
• – Drill into the lock to a depth of approximately 16mm. Once you have reached this depth, the internal pins will start to break down and you will feel the lock work a little loose.
• – Remove the drill and insert a small screw driver – twist the screw driver until the lock releases and the door opens.
• – The lock does not open – drill further into the lock and repeat.
• – Once the door of the mailbox is open:
• • – Remove the screw on the rear of the lock.
  • – Remove the washers between the screw and the CAM arm
  • – Remove the ‘CAM’ which holds the door closed.
  • – Remove the securing clip which tightens and secures the lock to the body of the mailbox.
  • – Place the new lock into the lock hole.
  • – Fit the securing clip to the lock.
  • – Add the CAM arm, washer and screw to the lock.
• – Using the new keys, check that the lock is now securing the door.