Established 1893 | BS 460:2002 Certified | UK & International Supply | Expert Technical Support | 0333 987 4452
Price range: £265.40 through £444.00 ex VAT (£318.48 – £532.80 inc VAT)
Cast iron connector from 100x75mm to 150x100mm rectangular downpipe to 65mm, 75mm or 100mm round, in primer or black painted finish.
UK delivery from £45. Longer items are despatched palletised. See delivery rates.
The Rectangular Pipe to Round Connector changes a rectangular downpipe to a round section, for connection to a round pipe, a round gully inlet or an underground drain socket.
It is used at the foot of a run where the below-ground drainage takes a round pipe, or where a rectangular run must join an existing round system.
Round outlets are 65mm, 75mm or 100mm. The 100mm round outlet is not made for 125mm x 70mm pipe.
All fittings in our rectangular range are cast iron to BS 460:2002, made to the same moulded profile so pipes and fittings line up neatly on the elevation. Every fitting is supplied either in primer, ready for painting on site, or in factory black. For listed buildings and conservation areas we also offer hand-applied linseed oil paint in heritage colours, which stays breathable and flexible and is straightforward to maintain. Stocked items are usually dispatched within 5 to 7 working days; allow around 6 to 7 weeks where a linseed oil finish is specified.
Rectangular pipe sizes: 100mm x 75mm (4″ x 3″), 125mm x 70mm, 125mm x 100mm (5″ x 4″) and 150mm x 100mm (6″ x 4″).
Suitable for listed buildings, conservation areas and heritage restoration. For specification support or a project quotation, call 0333 987 4452.
| Size/Finish | Primer 100mm x 75mm, Primer 125mm x 70mm, Primer 125mm x 100mm, Primer 150mm x 100mm, Black Painted 100mm x 75mm, Black Painted 125mm x 70mm, Black Painted 125mm x 100mm, Black Painted 150mm x 100mm |
|---|---|
| Round Outlet | 65mm, 75mm, 100mm |
Cross-reference
| Primer 100mm x 75mm, 65mm | RT4325A |
| Primer 100mm x 75mm, 75mm | RT4325B |
| Primer 100mm x 75mm, 100mm | RT4325C |
| Primer 125mm x 70mm, 65mm | RT5325A |
| Primer 125mm x 70mm, 75mm | RT5325B |
| Primer 125mm x 100mm, 65mm | RT5425A |
| Primer 125mm x 100mm, 75mm | RT5425B |
| Primer 125mm x 100mm, 100mm | RT5425C |
| Primer 150mm x 100mm, 65mm | RT6425A |
| Primer 150mm x 100mm, 75mm | RT6425B |
| Primer 150mm x 100mm, 100mm | RT6425C |
| Black Painted 100mm x 75mm, 65mm | XRT4325A |
| Black Painted 100mm x 75mm, 75mm | XRT4325B |
| Black Painted 100mm x 75mm, 100mm | XRT4325C |
| Black Painted 125mm x 70mm, 65mm | XRT5325A |
| Black Painted 125mm x 70mm, 75mm | XRT5325B |
| Black Painted 125mm x 100mm, 65mm | XRT5425A |
| Black Painted 125mm x 100mm, 75mm | XRT5425B |
| Black Painted 125mm x 100mm, 100mm | XRT5425C |
| Black Painted 150mm x 100mm, 65mm | XRT6425A |
| Black Painted 150mm x 100mm, 75mm | XRT6425B |
| Black Painted 150mm x 100mm, 100mm | XRT6425C |
Please call 0333 987 4452 or use the contact form with the size, quantity and connection details, and we'll provide a quotation.
The Calnethorpe is designed for formal classical and Georgian elevations where scale and material authenticity matter — large townhouses, country houses, manor houses, and institutional buildings. It is also widely specified for new-build heritage projects where cast iron rainwater goods are required to conservation standard.
The H543 measures 504mm wide x 185mm deep x 200mm high, making it well suited to wide, shallow proportions that suit box-gutter outlets on period roofs, terraces and commercial premises.
Yes. Cast iron hopper heads are the historically correct choice for listed and period buildings, and a like-for-like cast iron replacement is generally accepted without objection by conservation officers. We manufacture to BS 460 for genuine heritage character and durability.
Our cast iron airbricks are available in three standard sizes: 225mm × 75mm (single course), 225mm × 150mm (double course), and 225mm × 225mm (square format). These correspond to the standard airbrick positions used in Victorian and Edwardian brickwork. Each size is available across the School Board, Louvre, and Ornamental pattern ranges.
Available in two sizes: 225mm x 82mm (single airbrick course height) and 225mm x 150mm (double course height). Both sizes fit standard brick coursing positions and install flush into the wall face.
Prices for standard cast iron hopper heads are shown on the product page. For larger quantities, bespoke sizing, heritage colour finishes, or full rainwater system specifications, please call 0333 987 4452 or use the contact form.
The Antique Black finish is cast iron with a blackened surface — the most historically accurate finish for cast iron ironwork and the most appropriate for the majority of heritage applications. Polished Lacquered is cast iron with a bright polished surface sealed with clear lacquer, suited to interiors and sheltered locations where polished ironwork is the specification. Polished Brass is solid polished brass throughout — the correct choice where existing building fittings are in brass or where a warm metal tone is required.
Yes — we strongly recommend painting all products before installation to ensure full coverage on every surface, which reduces long-term maintenance. Standard Premier Rainwater products are supplied in a grey metal primer with rust inhibitors and need two undercoats and one top coat (or one undercoat and two top coats) of a good quality exterior paint.
Cast iron hopper heads from Tuscan Foundry are available in Standard Black (a factory-applied primer and topcoat finish) and Heritage Colours. A linseed oil paint finish is also available, providing a vapour-permeable, historically authentic coating that is particularly appropriate for listed buildings and conservation projects. Full finish specifications are available from the team.
