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Industry leading
Our sales and technical team have over 20 years’ experience working with the industry leading rainwater systems available in the UK. -
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Our aluminium, steel, cast iron, plastic & GRP rainwater systems are all sourced from the leading manufacturers in the UK to ensure they are of the highest quality.
100mm Rectangular Downpipe Cast Iron Style Effect

The 100mm x 75mm Rectangular Downpipes, from the Cascade range, are used with the Cast Iron Style 170mm Roundstyle High Capacity Rainwater System.
Contemporary style detailing combined with very high levels of roof drainage ensure that this system can be used on a wide variety of large heritage style buildings. Double seals on outlets, unions and angles guarantee optimum performance of this large, robust Cast Iron Style gutter system with all the benefits of using modern plastic products.
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Available
Brett Martin 100mm Rectangular Cast Effect Downpipe Rainwater Adaptor (160mm Gutter Outlet to 100mm x 75mm)
100mm Rectangular Cascade Cast Iron Style Downpipe Rainwater Adaptor (160mm Gutter Outlet to 100mm x 75mm) available in Classic Black, Oxford Blue, Olive Green, Graphite Grey, Sandstone and Porcelain White
0
From
Price
£13.69
Ex VAT£16.43 Inc VAT
Estimated lead-time 3 working days.
Estimated lead-time 3 working days.
Available
Brett Martin 100mm Rectangular Cast Effect Downpipe Adjustable Front Projection Offset
100mm Rectangular Cascade Cast Iron Style Downpipe Adjustable Front Projection Offset available in Classic Black, Oxford Blue, Olive Green, Graphite Grey, Sandstone and Porcelain White
0
From
Price
£55.69
Ex VAT£66.83 Inc VAT
Estimated lead-time 3 working days.
Estimated lead-time 3 working days.
Available
Brett Martin 100mm Rectangular Cast Effect Downpipe Adjustable Side Projection Offset (max offset 455mm)
100mm Rectangular Cascade Cast Iron Style Downpipe Adjustable Side Projection Offset (max offset 455mm) available in Classic Black, Oxford Blue, Olive Green, Graphite Grey, Sandstone and Porcelain White
0
From
Price
£55.69
Ex VAT£66.83 Inc VAT
Estimated lead-time 3 working days.
Estimated lead-time 3 working days.
Available
Brett Martin 100mm Rectangular Cast Effect Downpipe Shoe with Lugs
100mm Square Rectangular Cast Iron Style Downpipe Shoe with Lugs available in Classic Black, Oxford Blue, Olive Green, Graphite Grey, Sandstone and Porcelain White
0
From
Price
£42.79
Ex VAT£51.35 Inc VAT
Estimated lead-time 3 working days.
Estimated lead-time 3 working days.
Available
Brett Martin 100mm Rectangular Cast Effect Downpipe Gutter Downpipe Clip
100mm Rectangular Cascade Cast Iron Style Downpipe Clip available in Classic Black, Oxford Blue, Olive Green, Graphite Grey, Sandstone and Porcelain White
0
From
Price
£11.14
Ex VAT£13.37 Inc VAT
Estimated lead-time 3 working days.
Estimated lead-time 3 working days.
Available
Brett Martin 100mm Rectangular Cast Effect Downpipe 112.5 Degrees Spigot Bend NEW
100mm Rectangular Cascade Cast Iron Style Downpipe 112.5 degrees Spigot Bend NEW available in Classic Black, Oxford Blue, Olive Green, Graphite Grey, Sandstone and Porcelain White
0
From
Price
£42.79
Ex VAT£51.35 Inc VAT
Estimated lead-time 3 working days.
Estimated lead-time 3 working days.
Available
Brett Martin 100mm Rectangular Cast Effect Downpipe 112.5 Degrees Side Spigot Offset Bend
100mm Rectangular Cascade Cast Iron Style Downpipe 112.5 degrees Side Spigot Offset Bend available in Classic Black, Oxford Blue, Olive Green, Graphite Grey, Sandstone and Porcelain White
0
From
Price
£42.79
Ex VAT£51.35 Inc VAT
Estimated lead-time 3 working days.
Estimated lead-time 3 working days.
Available
Brett Martin 100mm Rectangular Cast Effect Downpipe 112.5 Degrees Branch
100mm Rectangular Cascade Cast Iron Style Downpipe 112.5 degrees Branch available in Classic Black, Oxford Blue, Olive Green, Graphite Grey, Sandstone and Porcelain White
0
From
Price
£48.61
Ex VAT£58.33 Inc VAT
Estimated lead-time 3 working days.
Estimated lead-time 3 working days.
Available
Brett Martin 100mm Rectangular Cast Effect Downpipe Lug Fixing Pack
100mm Rectangular Cascade Cast Iron Style Downpipe Lug Fixing Pack (Pack contains - 10x75mm Screws and Wall Plugs)
0
Price
£6.65
Ex VAT£7.98 Inc VAT
Estimated lead-time 3 working days.
Estimated lead-time 3 working days.