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Plastic Square Poly Pit 300mm

Features and Benefits

  • Versatile Use for Stormwater, Electrical & Communication Applications
  • Efficient Drainage
  • Australian-Made
  • Various Lid Options
  • Suitable for Light Traffic
SKU PP300300 Category


Plastic Square Poly Pit 300mm

The Plastic Square Poly Pit 300mm efficiently manages surface water in various domestic applications, primarily focusing on stormwater management. Its adaptability extends to electrical and communication applications, enhancing its versatility.

Quality and Durability

Manufactured in Australia, this pit features a base made from tough, durable, and lightweight UV-stabilized recycled plastic, ensuring long-lasting performance and resilience against environmental factors. It’s a dependable choice for enduring surface water management.

Ease of Installation

Installing the 300mm Plastic Pit is straightforward, thanks to its user-friendly design. Equipped with an extensive range of convenient and secure grates, it simplifies installation for both DIY enthusiasts and trade professionals.

Flexibility in Sizing and Load Capacity

The Plastic Square Poly Pit 300mm offers flexibility with its range of sizes and grate options, suitable for pedestrian and light vehicle traffic. When correctly installed in concrete, it boasts a Class A load rating, capable of withstanding light vehicle traffic.

Eco-Friendly Materials

This pit is crafted entirely from UV-stabilized recycled plastic, highlighting our commitment to environmental sustainability. By choosing the Plastic Square Poly Pit 300mm, you make a wise drainage choice while actively contributing to a greener future.

Key Features and Benefits
  • Versatile Use: Designed for downpipes, as a junction box, or at the end of surface water drainage channels.
  • Efficient Drainage: Specifically crafted for managing large volumes of surface water, ideal for household needs.
  • Australian-Made: Manufactured in Australia using 100% recycled plastic, showcasing commitment to quality and sustainability.
  • Grate Options: Available in Class A, B, and C grates, all complying with Australian Standards.
  • Versatile Sizing: The Square Pit 300mm offers various sizes and grate options, catering to different applications.
  • Suitable for Traffic: Ideal for pedestrian and light vehicle traffic, ensuring versatility for a wide range of applications.


Elevate your surface water management with the 300mm Plastic Pit—an adaptable and reliable solution designed to meet your drainage needs while prioritizing quality, durability, and sustainability.

Your One-Stop Supplier and Approved Retailer

Convic Australia not only serves as the trusted supplier of the Plastic Square Poly Pit 300mm but also stands as an approved retailer. Our commitment to providing top-quality solutions aligns with our role as a supplier, ensuring that customers receive products that meet the highest industry standards. Additionally, by being an approved retailer, we offer a convenient and reliable source for customers to access this versatile and eco-friendly drainage solution, enhancing their experience and satisfaction. Contact us today for more information!



Internal Dimensions
(Measurement of the internal perimeter)
343mm 343mm 325mm
External Dimensions
(Measurement of the external perimeter)
293mm 293mm 301mm
Weight 2.5kg


Installation Guide

Conventional Pits

1. Excavate hole for pit to required depth
2. Bed pit on a sand base to set top of pit at installed level
3. Mark and cut pipe holes as required
4. Install pit in hole
5. Connect pipes
6. Seal pipe and pit with silicone
7. When installing a riser, ensure riser is secured to pit with supplied nuts and bolts, with washer on each side
of the assembly. Seal around Riser and Pit base with silicone
8. Install grate – leave grate installed whilst back – filling and concreting
9. Even backfill around pit
10. Support pits and risers in a concrete collar – 250 and 300 series min 100mm thick x min 150 wide –
450 & 600 series min 150 thick x min 150mm wide