I have a air vent in a solid wall. It's approximately 1.6m up the wall.
With this type of vent, should the vents be facing upwards or downwards please? Also, what's the rationale behind the direction of the airflow.
Thanks in advance.
With this type of vent, should the vents be facing upwards or downwards please? Also, what's the rationale behind the direction of the airflow.
Thanks in advance.