400 Stonebloc Flat Top Block

This is a 400mm x 400mm x 400mm flat top Stonebloc block that weighs 150kgs and has a certified central lifting anchor.

You may need a combination of different types of Stonebloc blocks to build a retaining wall, please refer to our retaining manual. In certain cases a specific engineering design is required for consent purposes - you can enquire about this here.

Please note you will require 1 x 1.3t LiftingKlaw for this product (sold separately).

What Can I Use This Block For?

Why Stonebloc?
  • Super fast install time
  • Stackable blocks for strong structures
  • Safe, certified lifting points
  • Comprehensive warranties
  • Independently tested by the University of Auckland
  • Vertical on the boundary to maximise land
  • Unique split stone look

Enduring, timeless retaining with Stonebloc.

Customer Reviews

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Dimensions:400x400x400mm Weight:150kg SKU:

The Stonebloc System

All of the Stonebloc concrete blocks have been designed to interlock, allowing you to create various wall designs. 

You can use the 400 Stonebloc Flat Top block on its own or combine it with other Stonebloc blocks. Imagine what you can build!

CarbonSmart® Sustainability

CarbonSmart means ultra low embodied carbon, and zero waste to the landfill. 

Stonebloc delivers a 97% reduction in embodied carbon relative to the average carbon cost associated with concrete production*. 

High Productivity Construction

Stonebloc walls self align and stack together with ease, meaning two people and a 3.5t+ excavator can install up to 120m2 of wall per day. A simple levelling foundation is required in most situations, and inspections are only required once the wall has been fully constructed.

Detailed, project-specific, installation guides are provided at purchase including a colour-coded block layout plan to simplify the installation process.

Locally Manufactured

Stonebloc is manufactured locally and we’re continuously expanding our national presence to bring manufacturing even closer to our customers. In doing so we’re

  • Reducing the cost of freight
  • Delivering sustainability benefits to local communities
  • Increasing response times
  • Creating local jobs
Steve & Sopa's Stonebloc Retaining Wall