Series 410 Riser – 350mm

The Series 410 Riser was made to increase the depth of the Series 410 Pit by 350mm. ?Risers are used so that pits are deep enough to intersect with pipelines that are deeper in the ground. The slope of the land has no effect on the need for a riser.

RELN Series 410 Heavy Duty Commercial Pits are the perfect surface water pits for commercial applications including driveways, carparks, and trafficable areas.

RELN have a complete range of sizes in square and environmental pits as well as extensive grate options to offer both DIYers and trade professionals a complete solution for directing water away from the home. All Heavy Duty Commercial pits have conventional security grates and a range of innovative features that make installation easy and flexible.

  • Category
    Stormwater Drainage
  • Range
    Commercial Pits


Measurement of the external perimeter.

  • Length- 470mm
  • Width- 470mm
  • Depth- 421mm


Measurement of the internal perimeter.

  • Length- 415mm
  • Width- 415mm
  • Depth- 377mm


  • Durability – Made in Australia from tough, durable, and lightweight UV stabilised recycled plastic
  • Lock down security – Lock down security grate kits are available to secure the grate in place
  • Commercial surface drainage solution – With a range of sizes and grate options, RELN Series 410 Heavy Duty Commercial Pits are ideal for driveways and carparks.
  • Grates are available in AS3996 Class A or B Load Ratings – Perfect for commercial applications
  • Environmentally friendly – Made from 100% UV stabilised recycled plastic
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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.