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Aluminium Box Downpipe – 3m Length

Get clean lines and reliable drainage with this modern aluminium box downpipe built to last in all weather.

The Aluminium Box Downpipe | 3m Length is a stylish and long-lasting solution for managing roof drainage. With a square profile and clean edges, it fits perfectly into modern or traditional builds. Made from high-grade aluminium and finished with a durable polyester powder coating, it offers superior corrosion resistance and a neat, architectural appearance. Whether you're installing on a home, office, or industrial building, this downpipe ensures effective water flow and a strong visual finish. 

Please refer to the attached RAL colour chart to view available options. At checkout, enter your chosen RAL colour in the designated box. 

Choose a variant:

Starting at £55.80
excluding shipping cost
Download Colour Chart

Features + Benefits

  • Square-profile aluminium downpipe for a modern look

  • 3m length reduces the number of joins needed

  • Powder-coated finish protects against weather, rust, and fading

  • Compatible with brackets, offsets, hoppers, and connectors

  • Fire-rated A2-s1,d0 to meet UK safety regulations

  • Lightweight yet durable and easy to install

  • Suitable for residential, commercial, and industrial projects

  • Available in RAL and BS colour ranges

  • Made from 100% recyclable aluminium

  • Manufactured in the UK to a high standard

Specs & Options

  • Material: 1050A Grade Aluminium

  • Length: 3 metres

  • Profile: Square / box-style

  • Finish: Polyester powder-coated, external grade

  • Fire Rating: A2-s1,d0

  • Ends: Plain end, compatible with slip couplers

  • Fixings: Wall brackets, bends, and connectors sold separately

  • Lead Time: 3 to 5 working days

Installation / Usage Instructions

Fix brackets at 1.5 metre intervals to support the downpipe securely. Connect pipe sections using slip couplers or elbows where changes in direction are needed. Ensure correct alignment with the gutter outlet and provide a clear drainage path to ground or soakaway. Use sealant as needed to ensure watertight connections.

Looking for a modern, durable rainwater solution with clean square lines? 

This 3m aluminium box downpipe is built for easy installation and lasting performance. Order now or contact the Online Metal Store team for help with fittings or colour matching.