I’ve been in enough to see that there isn’t much air movement at all, usually made worse as there is a door to the stall with an undersized louver or no louver at all.
It may be a code requirement now, but I’ve seen a lot of places where it either isn’t working or isn’t there.
But it’s usually open at the top or there’s a ventilator of sorts, always one of the 2. Come to think of it, it’s probably a requirement.
I’ve been in enough to see that there isn’t much air movement at all, usually made worse as there is a door to the stall with an undersized louver or no louver at all.
It may be a code requirement now, but I’ve seen a lot of places where it either isn’t working or isn’t there.