|Item||Nom. Size (Inch)||Size (mm)||Vent Size (mm)||Weight (kg)||Air Flow (mm2)||Reverse Depth (mm)|
|L9||9 x 9||225 x 225||9||1.8||17,000||42|
British Products Made in British Foundries
L9 Air Brick
9 x 9 Louvre Air Brick painted black.
A large cast iron louvre suitable for installation were back draughts may be a problem. Used by Wolseley UK in a number of installations throughout England and wales
Product specifications can be found in the table below.
Square Slotted Grilles
Square slotted cast iron grilles can be used for either drainage, as gutters or for ventilation.
If used for vents they can be fitted externally or internally and either built into walls (either brick or stone) to fit flush with the wall surface and secured in place with mortar or plaster.
We can also drill them so they can be screwed to the wall to fit over a hole or for added security were the grille is mounted flush with the brickwork.
Louvre grilles have a number of uses . As air outlets they deflect air and gas downwards and can also help to reduce back draught especially when facing towards the prevailing wind.
They do help to reduce the amount of litter and cigarette ends push into vents in public buildings. They are often used for this purpose in rail stations (generally situated near ground level) and help reduce the occurrence of fires caused by careless passengers.
On exposed external walls they are particularly useful in deflecting rainwater ingress.
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