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Square Drainage Pits

Allproof square plastic drainage pit with cast iron grate installed in concrete
Allproof square plastic drainage pit with tile insert grate installed in concrete
Allproof square plastic drainage pit with cast iron grate installed in concrete
Allproof square plastic drainage pit with tile insert grate installed in concrete

Square Drainage Pits

Allproof’s Square Drainage Pits provide a durable and economical solution for stormwater catchment across residential and commercial projects. Manufactured from 100% recycled plastic, these pits combine environmental sustainability with robust performance. Available in three sizes with a range of grate options, they integrate seamlessly with Allproof’s linear channel range for design consistency.

Features:

    • Economical & durable plastic pit made using 100% recycled plastic
    • Grate options
      – Heelproof Cast Iron
      – Wedge Wire
      – Plastic
      – Aluminium
      – LAS
      – Galvanised Steel
      – Tile Insert
      – Stainless Steel Access Cover
    • Sizes
      – 250 mm² × 300 mm deep
      – 350 mm² × 325 mm deep
      – 350 mm² × 600 mm deep
    • Pre-marked 100 mm pipe outlets on 350 mm² pits with rubber gasket seal
    • Sediment catchment base (300 mm) on 600 mm depth model
    • Pit volumes from 12 L to 45 L depending on configuration
    • Optional riser and square-to-round adaptor available
    • Matches Allproof linear channel grates for consistent design

Allproof specification masterspec  

These drainage pits are highly adaptable and suitable for both commercial and residential applications. Square plastic pits offer a wide range of drainage grates designed to meet both aesthetic and performance requirements across various environments.

The grates have been load class tested for both vehicle and foot traffic, with heelproof options available for pedestrian areas. The stainless steel wedge wire grate features a slip resistance classification of R11 and a total open area of 30%, with individual openings of 100 mm². This makes it an excellent solution for pavements, pedestrian streets, and other high foot-traffic urban areas.

The tile insert grate serves as a sump or pit cover with a recessed section designed to accommodate tiles. Drainage occurs around the outer edge, leaving only a narrow reveal visible. This design is ideal for residential courtyards and patios, as well as urban planning zones where a discreet aesthetic is required.

For heavier traffic, the cast iron grate provides a durable commercial solution while still maintaining heelproof safety standards.

350x350 Drainage Pits


350x350 Pit Assemblies

250x250 Drainage Pits


Drainage Pits - Seals


350x350 Riser & Adaptor

Drainage Pit Volume Capacity (L)

Material Information

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