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Dimond Box 300 Gutter

Large sized gutter for commercial and industrial applications.

Key Features

Material options including thickness and grade:

  • Steel: 0.55mm G300
  • Aluminium: 0.90mm H34
  • Copper: 0.55mm ½ hard
  • Stainless Steel: refer to Dimond




Scope of Use
  • Effective cross sectional area (with 15mm free board): 33,550mm²
  • Flow capacity: 727 litres/min
  • Minimum recommended fall: 1:500
  • Minimum downpipe size: 
    • Circular: 150mm
    • Rectangular: min. cross sectional area of 18,500mm²

Catchment area per downpipe based on the above flow capacity is given in Table 3.1.I below. Use Table 3.1B (Section 3.1.4) to determine the Rainfall Intensity to be used.

table 3.1.I

Rainfall Intensity, 1 (mm/hr) 40 50 60 70 80 90 100 120 140 160 180 200
Catchment Area per downpipe Aₑ(m²) 1090 870 725 620 545 485 435 360 310 270 240 215
Dimond Roofing & Cladding Technical Manual
Colour Range
Additional Information

Dimond Roofing are a manufacturer of steel roofing, cladding and rainwater products.

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