The Ornamental Airbrick (OAB) is available in three sizes: 225mm × 75mm (2.8kg), 225mm × 150mm (4.1kg), and 225mm × 225mm (5.8kg). All sizes have a uniform depth of 75mm, making them consistent to install across a subfloor ventilation course.
Established 1893 | BS 460:2002 Certified | UK & International Supply | Expert Technical Support | 0333 987 4452
£32.69 – £81.13Price range: £32.69 through £81.13 +VAT
Cast iron half-round gutter drop end available with both External and Internal connections. Our unique cast iron guttering drop end is part of our heritage rainwater system.
Sizes Available:
100mm (4″) cast iron gutter
115mm (4.5″) cast iron gutter
125mm (5″) cast iron gutter
150mm (6″) cast iron gutter
External Drop End – HR4021A, HR4521A, HR5021A, HR6021B, XHR4021A, XHR4521A, XHR5021A, XHR6021B
Internal Drop End – HR4022A HR4522A HR5022A HR6022B XHR4022A XHR4522A XHR5022A XHR6022B
Common half round drop end internal or external.
Cast iron gutters and pipes offer great strength and durability, a proven history of long life, low noise operation and fire resistance. Most old buildings have cast iron rainwater systems that should be maintained and preserved however; these inherent benefits make a cast iron rainwater system an ideal choice for both traditional and modern installations.
| Size/Finish | Primer 100mm to 65mm Out, Primer 100mm to 75mm Out, Primer 115mm to 65mm Out, Primer 115mm to 75mm Out, Primer 125mm to 65mm Out, Primer 125mm to 75mm Out, Primer 150mm to 75mm Out, Primer 150mm to 100mm Out, Black Painted 100mm to 65mm Out, Black Painted 100mm to 75mm Out, Black Painted 115mm to 65mm Out, Black Painted 115mm to 75mm Out, Black Painted 125mm to 65mm Out, Black Painted 125mm to 75mm Out, Black Painted 150mm to 75mm Out, Black Painted 150mm to 100mm Out |
|---|---|
| Socket | Internal, External |
The Ornamental Airbrick (OAB) is available in three sizes: 225mm × 75mm (2.8kg), 225mm × 150mm (4.1kg), and 225mm × 225mm (5.8kg). All sizes have a uniform depth of 75mm, making them consistent to install across a subfloor ventilation course.
Our hopper heads are available with a wide range of pipe connections to suit round, square, and rectangular downpipes. The Calnethorpe No.11 accepts round 65mm, 75mm, and 100mm; square 75×75mm, 100×100mm, and 125×125mm; and rectangular 100×75mm, 125×100mm, and 150×100mm. Connection options vary by model — please contact us to confirm availability for your chosen hopper.
Most old buildings have cast iron rainwater systems that should be maintained and preserved however; these inherent benefits make cast iron an ideal choice for both traditional and modern installations. It is not uncommon to see modern alternative products marketed with terms like low maintenance or easy to install and cost effective. It has even been said that ‘plastic guttering systems provide a way of achieving a traditional look with modern convenience
As well as being easier to produce, the material enabled eaves gutters to be installed more simply, since lead could only be used in this location as a lining for timber gutters. Many modern materials focus on replicating the appearance of cast iron but those materials can vary rarely offer any of the benefits. Cast iron gutters and pipes offer great strength and durability, a proven history of long life, low noise operation and fire resistance.
Most old buildings have cast iron rainwater systems that should be maintained and preserved however; these inherent benefits make cast iron an ideal choice for both traditional and modern installations. It is not uncommon to see modern alternative products marketed with terms like low maintenance or easy to install and cost effective. It has even been said that ‘plastic guttering systems provide a way of achieving a traditional look with modern convenience’.
These terms tend to refer to possible cost savings rather than any real product benefits. It is also difficult to quantify the benefits of modern convenience over traditional build quality. It is worth remembering that all rainwater goods will require some element of maintaining to ensure they are unblocked by debris and remain functional. No rainwater system cleans itself.
Today most suppliers of cast iron rainwater systems offer products in both primer or pre-painted with a 10 year protective coating. When describing modern materials, the term ‘cost effective’ is used rather than simply saying cheap. There is no doubt that the initial cost of many modern materials is less than cast iron but you might be surprised to know that over its lifespan, cast iron will cost around a third of plastic.
Prices are shown on each product page. For project quantities, specification advice, or a formal quotation, please call 0333 987 4452 or use the contact form.
Prices are shown on the product pages at tuscanfoundry.com. For volume orders or project pricing, please call 0333 987 4452 or use the contact form on our website.
A corner hopper head collects rainwater from two gutters running at right angles and channels it into a single downpipe. They are typically required at internal roof valleys, on hipped roofs, and wherever two runs of gutter converge at a corner. The Regent H1A is designed specifically for this application and is sized to suit the most common gutter profiles.
Prices are shown on the product page. For project quantities, specification support, or a formal quotation, call 0333 987 4452 or use the contact form.
Yes. Cast iron rainwater goods are widely accepted by conservation officers and historic environment bodies as the appropriate material for listed buildings. Tuscan Foundry's hopper heads are manufactured in solid cast iron to BS 460 specification and are suitable for use on all listed building classes. A linseed oil paint finish is also available, which is particularly appropriate for conservation projects.
Rooflight opener handles can be ordered directly through tuscanfoundry.com. For volume orders or project-specific queries, please call 0333 987 4452 or use the contact form on our website.
The Cast Iron Louvre Airbrick suits Victorian, Edwardian, and inter-war residential and commercial properties where the louvre-pattern vent was the standard specification. It is the correct like-for-like replacement on listed buildings and conservation area properties, and suits new heritage-style construction requiring an authentic period ventilation grille.

