Planter Boxes

Any Shape. Any Size. Custom 

Made to suit your project.  

Rooftop, Balcony, Landscape, Wall Mount, Decorative – Large or small – Rusted or Powdercoated – Standard or Custom. PO Box Designs have a planter box for you. 


PO Box Designs are Australia’s largest manufacturer of custom made aluminium and Corten Steel planter boxes for residential and commercial spaces. We work with Australia’s leading architects, landscape architects, designers and contractors to provide tailored planters for any area.


Design, Cutting, Folding, Welding and Finishing is handled in our own production facility with over 1500 planters currently being produced each year. For detailed and custom projects our own specialist team of planter box designers work in 2D and 3D CAD to provide highly detailed shop drawings.


Our range includes nine main segments (and if these don’t suit you we can custom make to your requrements).

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Landscape Series

  • Corten 3.0mm
  • Aluminium 3.0mm
  • Open Base to natural ground
  • Square, Rectangle or Cylinders

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Rooftop Series

  • Aluminium 3 & 5mm Thickness
  • Powdercoated or Painted Finishes
  • Engineered subframe for light tare weight and high strength
  • Adjustable feet in base to enable easy levelling
  • Modular design for rooftop and terrace access
  • Any shape or configuration

Commercial Series

  • 6, or 10mm Steel
  • 6 or 10mm Aluminium
  • 3 or 6mm Stainless Steel
  • High strength design for high impact commercial spaces
  • Can be designed to act as traffic control bollards
  • Range of finishes & Shapes

Mackillop Retainer

Balcony Screen Planters

  • 3mm Aluminium
  • Laser cut feature screening to provide privacy and trellis for plants
  • Planter acts as counterweight
  • Adjustable feet or castor wheels option
  • Variety of finishes, sizes and configurations.

Wall Mount Planters

  • 3mm Aluminium
  • Variety of lengths and profiles
  • Powdercoated Finish
  • Easily mounted to add interest to blank walls

Retainer Range

  • 3mm Corten Steel
  • Straight, Curved or any shape configuration
  • Range of heights
  • Includes back gussets and fixing provision for strip footing
  • Any length

Interested in a quote or custom design for your landscape, rooftop, balcony or commercial project? Please contact us.

We are specialists in Rooftop Spaces.  

Your design or ours – we can work with you to get the most from your rooftop or balcony spaces.  


We have completed amazing projects throughout Melbourne, Sydney and Brisbane on residential and commercial rooftops. We work closely with our clients to provide custom made planters, pergolas and seating for rooftop spaces which often have very restrictive constraints and parameters. Weight loading is a critical factor and the use of engineered and custom fabricated aluminum items offers many benefits.


Aluminium Planters have a tare weight of only 30kg per m2 (subject to design) and therefore only takes up a minimal amount of the available weight loadings on the slab which are typically around 200kg per m2.


Our services include consultation, design support, engineering, fabrication, installation and delivery. If you are a landscape architect, architect, designer or property owner we will work with you to bring your idea to life.