![](https://orion.supplies/1947-large_default/white-trickle-vent.jpg)
![](https://orion.supplies/1947-large_default/white-trickle-vent.jpg)
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These vents are used to provide background ventilation in habited spaces which are meant to be naturally ventilated by removing polluted indoor air and replacing it with clean fresh outside air to create a healthy living environment, without creating a draught.
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