การไหลของอากาศ

A white fan placed on the floor against a simple indoor background
@yskh248y

yskh

Metal ventilation duct attached to a wall
take_apii1t

take_apii1

A white fan positioned on the floor against a simple backdrop
@yskh248y

yskh

Image of an old cooling unit featuring a large circular fan grille
@kasako

かさこ

Metal ventilation duct mounted on a roof against a clear blue sky
ookinate23o

ookinate23