The H525 measures 270mm wide x 208mm deep x 285mm high, making it well suited to smaller period properties, extensions and outbuildings.
Established 1893 | BS 460:2002 Certified | UK & International Supply | Expert Technical Support | 0333 987 4452
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Suitable for roof pitches over 20°. Lower pitches would need extended overlaps fitted with insect mesh, ‘hole punched’ front plate can be done if wanted.
Suitable for roof pitches over 20°. Lower pitches would need extended overlaps fitted with insect mesh, ‘hole punched’ front plate can be done if wanted.
The H525 measures 270mm wide x 208mm deep x 285mm high, making it well suited to smaller period properties, extensions and outbuildings.
The Antique Black finish suits Victorian, Edwardian, and inter-war buildings where ventilation ironwork was painted rather than polished — estate houses, terrace housing, civic buildings, and rural properties. It is also correct for listed buildings and conservation area properties requiring like-for-like replacement of original ornamental cast iron vents.
Our cast iron hopper heads are available with 65mm, 75mm and 100mm round outlets, 75mm, 100mm and 125mm square outlets, and 100x75mm, 125x100mm and 150x125mm rectangular outlets, to match the downpipe already on site or specified for the project.
Cast iron radiators cost no more to run than modern steel or aluminium radiators. Cast iron is a very efficient material at emitting heat, thus you have items like le creuset cast iron pans. Cast iron holds it’s heat extremly well, which means that the radiators stay warm for longer.
Our cast iron hopper heads are available in a standard primed and black-painted finish, ready for on-site topcoats. Heritage colour finishes and factory-applied linseed oil paint are available on request. Linseed oil paint is a vapour-permeable, period-appropriate finish particularly well suited to listed buildings and conservation area properties.
An access pipe is a short downpipe section with a bolted inspection door. Removing the door lets you rod or flush the pipe to clear leaves and silt without dismantling the run. Stand clear when opening it, as water held above a blockage may release.
Hopper heads are supplied in red oxide primer ready for on-site painting, or pre-finished in black. A full range of Heritage Colours in traditional linseed oil paint is also available on request — please contact us for the swatch chart.
Please call 0333 987 4452 or use the contact form with the size, quantity and connection details, and we'll provide a quotation.
The School Board Airbrick suits Victorian and Edwardian institutional, civic, and residential buildings where the square-grid airbrick pattern was standard — including school buildings, civic halls, estate housing, terrace houses, and warehouses. It is also appropriate on listed buildings and conservation area properties as a like-for-like replacement for worn square-grid cast iron vents.
Our cast iron hopper heads are available with 65mm, 75mm and 100mm round outlets, 75mm, 100mm and 125mm square outlets, and 100x75mm, 125x100mm and 150x125mm rectangular outlets, to match the downpipe already on site or specified for the project.

