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The uncomplicated square appearance of the box gutter suits both contemporary and more traditional dwellings. High fronted, it conceals ends of roof iron and can be fixed with either internal or external brackets. This gutter is well designed to capture water run-off from large surface areas. Internal brackets are the most common choice with 125 Box Gutter, providing extra strength.

  • 8750mm2 cross sectional area

  • All gutters must have a minimum fall of 1:500 (2mm in 1m), however the NZMRM Code of Practice recommends 1:200 (5mm in 1m) as it will improve drainage and self-cleaning

  • Rollformed in ZINCALUME®,  COLORSTEEL® MAXX® and Copper (price on application)

  • Manufactured in our Stratford factory (maximum 8m lengths)

  • Suitable for residential and light commercial applications

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3 cups


1½ cups


All profile dimensions are nominal





Steelformers 125 Box Gutter can be fixed with internal or external aluminium brackets that are powdercoated to match the spouting. The brackets should be fixed at a maximum of 750mm centres. In areas where snow fall is possible and/or high wind areas the centres should be reduced to 600mm maximum. All installations as per NZMRM Code of Practice recommendations.


Screw fastenings are to be compatible with substrate and bracket material avoiding dissimilar material contact

Corners and Stopends

All corners and stopends are formed on site at the time of installation, please allow enough material to do so. Steelformers recommends adding 400mm to your required lengths.

Downpipes and accessories

Various round downpipes and accessories can be ordered in from our suppliers. For more information on whats available contact your nearest Steelformers branch.

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