Uni-Pit Vortex 300 with Heritage Green Aluminium Grate

RELN Uni-Pit Vortex 300 Series has a shallow profile, making it the fastest and easiest pits to install in commercial applications. They are designed for domestic and commercial larger paved areas and driveways. The unique vortex design prevents water pooling in the bottom of the pit, removing a common breeding place for mosquitoes. The Uni-Pit vortex inline surface water drainage system eliminates the need to risers, as vertical pipe can be cut to the required depth.

The Heritage Green Aluminium Grate has a flat profile, making it perfect for use in pavers around the home and around pools.

  • Category
    Stormwater Drainage
  • Range


Measurement of the external perimeter.

  • Length - 334mm
  • Width - 334mm
  • Depth - 138mm


Measurement of the internal perimeter.

  • Length - 291mm
  • Width - 291mm
  • Depth - 85mm



  • Durability – Made in Australia from tough, durable, and lightweight UV stabilised recycled plastic
  • Easy to install – RELN Uni-Pit Vortex is easy to install with its extensive range of convenient and security grates
  • Domestic and commercial surface drainage solution – With a range of sizes and grate options, RELN Uni-Pit Vortex is perfect for domestic and commercial surface drainage.
  • Class A Load Rating – Rated to Class A and when correctly installed in concrete, the grate can withstand light vehicle traffic
  • Environmentally friendly – Made from 100% UV stabilised recycled plastic
  • Anti-tamper feature
  • Vortex design – Assists with water flow and eliminates pooling water, which is a common breeding place for mosquitoes
  • Built in debris collector – The pits vortex design acts as a debris collector, preventing pipe blockage
  • No risers required – Simply cut vertical pipe to required connection level
  • Plumber-friendly – Easy glue fit to 90mm or 100mm PVC pipe
  • Grates are available in AS3996 Class A, B or C Load Ratings – Perfect for domestic or commercial applications
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About the

RELN is the drainage brand you can be confident in trusting. Their products are durable, made to last and are designed and manufactured in Australia. RELN's focus is to deliver quality product, at the right place, and the right time. They continue to stay at the forefront of innovation, designing and manufacturing product ranges for surface water, ground water and black water applications, as well as a range of agriculture products.   

Their philosophy is to produce product from 100% recycled plastic, and they are proud to say that they've been doing it for many years and will continuously do so.

They are a multi-award winning and quality-endorsed Australian company, known for designing and producing innovative quality plastic products for the Australian and international markets.