Installation Details for a Letterbox

Dig a hole approximately 200mm in diameter x 250mm deep.

Set 2 - Add Concrete Mix & Set Post

Add approx 100mm of Rapid Set (or Post Mix Concrete) in the hole and set the mailbox post on top of this. Then add the required amount of water and fill the remainder of the hole with the concrete mix. Please ensure that the mailbox is level in the hole and then mix/pack the concrete around this to hold it stable.

We recommend using a rapid setting concrete. Although the concrete will be touch dry in just 15 minutes, solid curing will take at least 2 hours – do not apply stress to the posts in this time.

Step 1- Guide Hole
Use a crow bar to create a path for the Screw Anchor to follow. This is to ensure that the Anchor will screw in straight and not kilter of course by obstacles.

Step 2- Insert Anchor
Clear an area on the top of the guide hole approx 50mm deep x 300mm dia. With the drive pin supplied screw the anchor into the ground till the top of the anchor is level to the natural ground level.

Step 3- Insert Mailbox
Using the plastic insert bushes supplied, insert the correct diameter insert for the post into the Anchor then insert the mailbox post into the Anchor till it can go no further, tighten screw and replace the dirt so that the fastening screw is buried.