Description
Explorer Smooth Concrete Sleeper 2000 × 200 × 100mm
Build stronger, more robust retaining walls with the Explorer Smooth Concrete Sleeper 2000 × 200 × 100mm. Designed for projects that demand additional strength and durability, this heavy-duty reinforced concrete sleeper provides greater structural performance than standard 75mm sleepers while maintaining the same clean, contemporary smooth finish.
With its increased 100mm thickness, this sleeper is ideal for larger retaining walls, commercial landscaping projects and applications where additional strength and rigidity are required. The 2000mm length also reduces the number of joins and supporting posts, creating a cleaner, more streamlined finished wall.
Finished in Charcoal, the Explorer Smooth Heavy Duty Sleeper delivers a modern architectural appearance that complements contemporary homes, commercial developments and premium landscape projects.
Available Colour
This heavy-duty sleeper is available in:
- Charcoal – A bold, modern finish that creates striking contrast with paving, natural stone and surrounding landscaping.
Heavy Duty Explorer Range
This product is part of the Explorer Heavy Duty range, designed for projects requiring increased strength and durability.
- 2000 × 200 × 100mm
Matching heavy-duty galvanised retaining wall posts and accessories are also available to complete your retaining wall system.
Key Features & Benefits
Heavy Duty 100mm Construction
The increased 100mm thickness provides greater strength and rigidity compared to standard 75mm sleepers, making it ideal for more demanding retaining wall applications.
Contemporary Smooth Finish
A clean architectural face that complements modern homes, commercial developments and premium landscape designs.
Reinforced Concrete Construction
Manufactured from reinforced concrete for outstanding structural performance, durability and long-term reliability.
Fewer Joins, Faster Installation
The 2000mm length spans greater distances between posts, reducing joins and creating a cleaner finished retaining wall while improving installation efficiency.
Won’t Rot, Warp or Attract Termites
Unlike traditional timber sleepers, reinforced concrete won’t rot, split, warp or suffer termite damage, delivering years of low-maintenance performance.
Low Maintenance
No painting, staining or ongoing treatments are required. Once installed, your retaining wall is designed to provide decades of reliable performance.
Perfect For
The 2000 × 200 × 100mm Heavy Duty Sleeper is ideal for:
- Large residential retaining walls
- Commercial retaining walls
- Boundary retaining walls
- Industrial landscaping
- Landscape terracing
- Professional landscaping projects
- Projects requiring increased structural strength
Why Choose the Heavy Duty 100mm Sleeper?
Where additional strength and rigidity are required, the 100mm thick sleeper provides greater structural performance than standard retaining wall sleepers.
Combined with its longer 2000mm span, it creates a cleaner finished wall with fewer joins while providing extra confidence for larger landscaping projects. For retaining walls with higher loads or more demanding site conditions, the heavy-duty option offers an excellent combination of strength, durability and modern appearance.
Product Specifications
Dimensions: 2000 × 200 × 100mm
Finish: Smooth Face
Colour Available:
- Charcoal
Construction: Reinforced Concrete
Thickness: 100mm Heavy Duty
Suitable For: Residential and commercial retaining walls
Installation Information
This heavy-duty sleeper is designed to be installed with compatible heavy-duty galvanised retaining wall posts.
Due to its increased thickness and weight, mechanical lifting equipment or additional assistance may be required during installation.
Retaining walls above certain heights, supporting additional loads or located near buildings may require engineering certification. Always construct retaining walls in accordance with Australian Standards and your local council requirements.
Practical Information
Sold individually.
Available for pickup or delivery from selected Nuway Landscape Supplies stores.
As with all concrete products, slight variations in colour, texture and finish may occur between production batches. For the most consistent appearance, we recommend blending products during installation where multiple units are used.
💡 Nuway Tip
Planning a heavy-duty retaining wall? Choosing the right sleeper is only part of the equation. Proper drainage and quality installation materials are essential for long-term performance.
We recommend completing your project with:
- Heavy-duty galvanised retaining wall posts
- Drainage gravel
- Agricultural (Ag) pipe
- Geotextile drainage fabric
- Concrete Mix for post installation
- Suitable backfill material
- Decorative pebbles, gravel or mulch to complete your landscape
Not sure what you’ll need? Our experienced team can help calculate the correct materials for your retaining wall project and recommend the best products to suit your site conditions.





