Graphical Construction Glossary >> Doors. >> Door types >> Louver Doors
In just about every case these doors with louvres are all about ventilation, one way or another.
I live in the tropics and mainly we get our ventilation via louvres though louvre windows. We don't see many old external timber doors like the one above as tastes seem to have moved on.
There are still many wardrobe doors made out of timber louvered doors. The ventilation helps to prevent the onset of mould or mildew in damp conditions.
Where they are still common are in cases like the above set of all steel doors. Typically they are seen in industrial situations like this electrical sub-station, where strength and security are needed, but also an amount of ventilation to stop the build up of noxious gases.
This door once again is to a small electrical switch room, but the aluminium inserts are seen in many large air-conditioned buildings. They are used to equalise the pressure between rooms.
The sketch above gives an idea of how the louvers are set up. You can see that each of the different systems had one concept in common. The overlap. This means that for any external doors it stops wind blown rain from getting inside the door. It also has the effect of stopping any view into the inside.
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