Designs and Uses
Cast iron air bricks are used either externally or internally, built into walls
(either brick or stone) to fit flush with the wall surface and secured in place
with mortar or plaster.
We have 6 designs of air bricks in this size - 9" x 3" (225 x 75mm), a very
popular size for air bricks as it is the standard size of an old fashioned
British house brick. The majority of these designs are virtual replicas of
designs cast for many generations, possibly dating back to Georgian times.
We also supply a stunning air brick based on the Georgian slotted pattern which
is smaller than the imperial air bricks at 8 1/2" x 2 1/2" (213 x 66mm) named
"Windsor", item WIN3. This air brick is suitable for fitting into
cavity wall ducting and periscope vents and looks equally good on its own
fitted in period properties as well as modern homes and barn conversions.
Because of its narrow size, it is often used in place of imperial sized air
bricks where there isn't enough room for mortar between the bricks and the air
Which design you choose is very much a matter of taste although there are a
number of factors which might help in choosing one design over another.
If the air brick is positioned along a busy pavement then a heavy model such as
the Windsor (WIN3) , the Max flow (MAX3) or Regency Scroll (REG3)would be ideal.
If air flow is important, again the max flow, as the name suggests is a clear
winner. For an authentic period finish may we recommend the Victorian Y pattern
(Y3) or for earlier properties, the Regency Scroll or Windsor?
The Square Hole (GRID3) is a utilitarian pattern found in many period properties
around the UK.
Often we are asked if insect mesh can be fitted to the back of any of our air
bricks. Unfortunately the design of air bricks is such that they are permanently
fitted into a wall and therefore any mesh fitted behind will eventually become
blocked with dirt, closing off the air flow. There is a solution, the FLY3 is a
cast iron air brick which has a removable front allowing the mesh to be fitted
with provision for it to be removed at any time for cleaning.
The FLY3, fly screen air brick with removable mesh is ideal to prevent ingress
of foreign objects into properties and ducting and is an effective barrier
against rodents and insects.
Only one air brick (FLY3) , is suitable for fitting
insect mesh, designed by us and cast exclusively for us in England.
shipping available on all these
There are also adjustable cast iron air bricks, known as
hit and miss and
louvred air bricks available in this size.
Windsor Air Brick
213 x 66mm
£55 In Stock
ITEM -Win3 + Painted Black
|£65 In Stock
225 x 75mm
9" x 3"
£30 In Stock
ITEM - GRID3 + Painted black
£40 In Stock
British Designs and British Castings
All our cast iron products are made in the UK, the 9x3 inch air bricks shown
here are made to our specifications in foundries in Yorkshire, Birmingham and
Scotland. Some, the Regency Scroll and Max Flow are individually made by hand
using wooden molds and green sand for a heavyweight rustic finish. Others, the
Victorian Y design, Slotted and square hole designs are made from metal
patterns, four cast at a time for a finer and more precise finish.
All purchases made from The Cast Iron Air Brick Company support British
Because all our products are made in UK
Paint or Bare Metal?
Our cast iron products contain iron, nearly 100% iron
to be precise and this iron will rust if it isn't kept protected from moisture
and air. Whilst many of our products are supplied painted, we do offer
customers the choice to have some of them left bare metal. It seems strange to
leave them bare metal to go rusty but the rust coating on iron acts as a
protection against corrosion and ensures the air brick will remain for 100 years
or more without any preservation. In fact, many of the ironware we see in our
high streets and roads (drain covers and gutters) are unpainted.
We would recommend either painted or bare metal air bricks installed
externally in red bare brick walls and painted air bricks for external rendered
or painted walls and for any internal use. Our painted air bricks are primed and
then painted using a two-part professional epoxy black gloss paint which will
need repainting from time to time.