Black Aluminum Supply Air Grille - 400x100mm

Made of black aluminum supply air grille adjusted to redirect the airflow to a particular area. 

For air conditioning, the supply grilles should be placed at a higher location to ensure that cold air is directed downwards, while for heating purposes, the supply grilles should be positioned lower on the wall to ensure that warm air moves upwards.

It maintains durability and can withstand corrosion for an extended period.