Rectangular cast iron downpipes create a much sharper, more architectural appearance than standard round cast iron rainwater pipes. You often see them in cities like London and Manchester on old properties.
The clean vertical lines suit buildings with stronger detailing across the façade, which is why rectangular cast iron downpipes are so often specified alongside Moulded Ogee cast iron guttering on heritage and restoration projects.
While round cast iron downpipes remain the more common choice across traditional properties, rectangular profiles bring a more formal appearance to the rainwater system and work especially well on larger period buildings, churches, townhouses, and architectural developments where detail matters. If you're unsure, you can always email us with an image of your property and we'll help you decide.
At Cast Iron Warehouse, we specialise in supplying genuine Alumasc Apex Heritage rectangular cast iron downpipes alongside matching Moulded Ogee guttering, rectangular hopper heads, bends, offsets, shoes, brackets, and fittings for complete heritage rainwater systems. Widely specified by architects across conservation and restoration projects throughout the UK, the Alumasc Apex range combines authentic sand cast manufacture with the consistency and reliability expected on modern construction work.
The socketed cast iron pipe design creates a far more authentic finish than imitation cast iron effect systems, particularly on traditional elevations where rainwater goods form part of the building’s architecture rather than simply serving a practical function.
Alumasc Apex 1.83m (6ft) Cast Iron 100 x 75mm (4"x3") Square Downpipe with Ears - Black
Sale price £368.74 Regular price £510.11Unit priceAlumasc Apex 0.9m (3ft) Cast Iron 100 x 75mm (4"x3") Square Downpipe with Ears - Black
Sale price £267.98 Regular price £370.72Unit priceAlumasc Apex 1.83m (6ft) Cast Iron 100 x 75mm (4"x3") Square Downpipe without Ears - Black
Sale price £362.14 Regular price £500.98Unit priceAlumasc Apex 0.9m (3ft) Cast Iron 100 x 75mm (4"x3") Square Downpipe without Ears - Black
Sale price £264.71 Regular price £366.20Unit price- Sale price £144.13 Regular price £199.38Unit price
- Sale price £144.13 Regular price £199.38Unit price
- Sale price £303.93 Regular price £420.46Unit price
- Sale price £303.93 Regular price £420.46Unit price
Alumasc Apex Cast Iron 100 x 75mm (4"x3") Square Downpipe 120 Degree Swan Neck (76mm Offset) - Black
Sale price £170.18 Regular price £235.42Unit price- Sale price £200.10 Regular price £276.82Unit price
- Sale price £183.36 Regular price £253.67Unit price
- Sale price £183.36 Regular price £253.67Unit price
- Sale price £215.72 Regular price £298.43Unit price
- Sale price £240.64 Regular price £332.90Unit price
- Sale price £257.99 Regular price £356.90Unit price
- Sale price £215.72 Regular price £298.43Unit price
Alumasc Apex Cast Iron 100 x 75mm (4"x3") Square Socket - with Ears - Black
Sale price £145.63 Regular price £201.46Unit priceAlumasc Apex Cast Iron 100 x 75mm (4"x3") Square Downpipe Shoe - Front with Ears - Black
Sale price £179.46 Regular price £248.26Unit priceAlumasc Apex Cast Iron 100 x 75mm (4"x3") Square Downpipe Shoe - Front without Ears - Black
Sale price £176.97 Regular price £244.83Unit priceAlumasc Apex Cast Iron 100 x 75mm (4"x3") Square Downpipe Access Pipe - without Ears - Black
Sale price £283.96 Regular price £392.83Unit price- Sale price £133.11 Regular price £184.15Unit price
- Sale price £238.70 Regular price £330.21Unit price
Alumasc Apex 1.83m (6ft) Cast Iron 100 x 75mm (4"x3") Square Downpipe with Ears - Primed
Regular price £358.46Unit priceAlumasc Apex 0.9m (3ft) Cast Iron 100 x 75mm (4"x3") Square Downpipe with Ears - Primed
Regular price £268.84Unit priceAlumasc Apex 1.83m (6ft) Cast Iron 100 x 75mm (4"x3") Square Downpipe without Ears - Primed
Sale price £361.13 Regular price £499.59Unit priceAlumasc Apex 0.9m (3ft) Cast Iron 100 x 75mm (4"x3") Square Downpipe without Ears - Primed
Sale price £263.97 Regular price £365.17Unit priceAlumasc Apex Cast Iron 100 x 75mm (4"x3") Square Downpipe Shoe - Front with Ears - Primed
Regular price £180.03Unit priceAlumasc Apex Cast Iron 100 x 75mm (4"x3") Square Downpipe Shoe - Front without Ears - Primed
Sale price £176.47 Regular price £244.14Unit priceAlumasc Apex Cast Iron 100 x 75mm (4"x3") Square Downpipe Access Pipe - without Ears - Primed
Sale price £283.18 Regular price £391.76Unit price- Sale price £143.74 Regular price £198.86Unit price
- Sale price £143.74 Regular price £198.86Unit price
- Sale price £303.08 Regular price £419.27Unit price
- Sale price £303.08 Regular price £419.27Unit price
- Sale price £169.70 Regular price £234.76Unit price
- Sale price £182.85 Regular price £252.96Unit price
- Sale price £182.85 Regular price £252.96Unit price
- Sale price £239.95 Regular price £331.96Unit price
- Regular price £258.78Unit price
- Sale price £199.58 Regular price £276.09Unit price
- Sale price £215.13 Regular price £297.61Unit price
- Sale price £215.13 Regular price £297.61Unit price
Alumasc Apex Cast Iron 100 x 75mm (4"x3") Square Socket - with Ears - Primed
Sale price £145.23 Regular price £200.91Unit price- Sale price £139.10 Regular price £192.43Unit price
- Sale price £249.43 Regular price £345.07Unit price
- Sale price £367.73 Regular price £508.70Unit price
- Sale price £178.96 Regular price £247.56Unit price
- Sale price £368.74 Regular price £510.11Unit price
- Sale price £267.98 Regular price £370.72Unit price
- Sale price £362.14 Regular price £500.98Unit price
- Sale price £264.71 Regular price £366.20Unit price