Freestanding Post Mounted Letterbox Installation Guide

  • by Daniel Wood

This guide is relevant for the Augusta, Kooyonga, Grange, Ultimo, Vandal ResistHorizontal Pillar and Multibanks

Freestanding post mounted letterboxes are a fantastic option for wide open yards without a fence or wall. 

Installation is fairly easy and can be done by even the least handy person. You'll just need to set aside a bit of time and gather some materials. 

Our freestanding letter boxes come ready to be inserted into the ground. 

A note on the Horizontal Pillar. It has a slightly different system. Rather than one large post, it has two diagonally opposite extendable posts. The same principles apply to digging the hole and inserting the posts. 


  • Quick set concrete
  • Spirit level
  • Shovel
  • Bucket

1. Start by assembling your letterbox if needed. Most of our freestanding letterboxes require the head to be screwed onto the posts through 4 simple nuts and bolts on the base of the head through the top plate of the post. 

2. Find an appropriate position for your letterbox. It should ideally be at the base of your driveway as close to the footpath as possible, on level ground. 

3. Dig a hole at least twice the diameter of the post and one third the height of your post. Our top mounted posts are 50x50mm and 1300mm high while our side mounted posts are 1600mm high. Assure the base of the hole is level and clear of obstructions like rocks. Your mail slot needs to be between 900 and 1200mm from ground level as per Australia Post's regulations. 

4. Mix your quick set concrete and fill the hole about half way. 

5. Insert the post into the centre of the hole. Check that is is straight with a spirit level. You may need to use clamps or wooden planks to brace and hold it in position. 

6. Fill in the rest of the hole with dirt for a nice flat finish to the base of the post. 

7. Consult your quick set concrete bag's instructions for advice on how long to leave concrete to cure. Generally it will be a couple of hours. 


Tagged with: freestanding installation

Older Post Newer Post


There are no comments yet. Be the first one to post one!

Leave a comment