Consultation

How to change a post box lock in under 5 minutes!

To replace a lock, you will need:

  • – SLB Security Lock
  • – Power drill
  • – Flat head screwdriver
  • – 4mm drill bit
  • – 12mm socket
  • – 22mm spanner


The steps to changing a lock

Step 1: Using the 4mm drill bit and power drill, start to drill into the centre of the mailbox lock. Apply steady and consistent pressure and try to reach a depth of around 16mm.
Keep drilling the lock for approximately 1-2 minutes until you will start to feel the mailbox lock work loose as you drill. The front door may release by itself – if it doesn’t, use a flat head screwdriver to turn the lock anti-clockwise which will release the door.
Step 2: Loosen the nut at the rear of the lock using a 12mm socket. Once the nut has been removed, you will also be able to remove the ‘CAM Arm’ – keep the CAM Arm safe!
Step 3: Remove the locking ring using the 22mm spanner.
Step 4: Pop the lock out of the front of the mailbox.
Step 5: Place the new lock into the lock hole from the front of the mailbox. Add the locking ring and tighten.
Step 6: Add the CAM Arm to the lock. Set the CAM Arm to a horizontal position pointing outside of the mailbox.
Step 7: Tighten the nut on the rear of the mailbox lock.
step 8: Put the keys in the lock and close the door.


Replacement mailbox locks are available for purchase via our online store.

No-obligation FREE consultation

We welcome the chance to discuss your project and we can share all that is current in terms of standards and product options totally free of charge.

Simply complete and submit the form and we will get back in touch WITHIN 24 HOURS to talk through your requirements.

We also provide Autocad drawings as required – it’s all part of the service!

Or drop us a quick email: [email protected]

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No-obligation FREE consultation

We welcome the chance to discuss your project and we can share all that is current in terms of standards and product options totally free of charge.

Simply complete and submit the form and we will get back in touch WITHIN 24 HOURS to talk through your requirements.

We also provide Autocad drawings as required – it’s all part of the service!

Or drop us a quick email: [email protected]

Please enable JavaScript in your browser to complete this form.