Alumasc Apex Cast Iron 100 x 75mm (4"x3") Square Downpipe Shoe - Front with Ears - One of 6 CI Standard RAL Colours TBC

At Cast Iron Warehouse, we’re one of the UK’s leading suppliers of genuine cast iron rainwater systems, supplying the full Alumasc Apex Heritage range across heritage, conservation, and architectural projects nationwide.

The 100 x 75mm rectangular cast iron downpipe profile creates a much sharper and more formal appearance than traditional round downpipes. It works especially well alongside Alumasc Apex Moulded Ogee guttering, helping create a stronger architectural finish across period buildings, churches, listed properties, and traditional developments where detailing matters. Less common than round cast iron downpipes, rectangular profiles bring a more distinctive appearance to the building facade while still delivering excellent rainwater performance and long-term durability.

Manufactured using authentic sand cast methods and produced to BS460 standards, Apex Heritage downpipes combine traditional styling with modern quality control and dimensional consistency.

Key Features

• Traditional 100 x 75mm (4” x 3”) rectangular cast iron downpipe
• Ideal for heritage, listed, and conservation projects
• Pairs perfectly with Moulded Ogee cast iron guttering
• Genuine sand cast construction
• Manufactured to British Standard BS460
• Extremely strong and long-lasting
• Socketed joints for authentic traditional detailing
• Matching bends, shoes, offsets, hopper heads, and fittings available
• Service life exceeding 40 years

Finish Options

We supply Apex rectangular cast iron downpipes in:

• Painted black
• Primed finish
• Any custom RAL colour

All systems are professionally coated in the UK with typical lead times of approximately 10 working days from point of order.