bird or rat problem

Yes. Small holes type. Like chicken wire size.

ya ..... takut bird/cat strike

That's a diverter. To prevent hot air recirculate

Air cool intake manifold

Install bird net , louvers will recirculating hot air.
https://s.shopee.com.my/6VEFuP7zKU

make sure air flow ada. or else kena overheat tripz

You can see it doesn’t effective.

why not this?

the purpose they doing this is to redirect the hot air to center compare original hot air through side

To prove working 100% or not maybe need to test on wind tunnel or smoke test to see surrounding temperature/airflow volume before and after but the results have not much different sebab....

See the picture already know that not the best spot for installing compressor but due to many reasons end up juga install di situ tldr user/installer/management problem 😂

See the pic already know the intake have not enough space for cold airflow suck in.

That short ducting is not enough long to divert the hot air away.

I don’t no what is the point of install that ducting.

You can bend the duct . But if you extend it no difference since this fan also can blow much further

Because it's installed halfway. It need to route outwards

This is only when the hot air is blowing at pedestrian

I wonder how well hot air will vent away while at the same time other compressor sucking hot hair.

can, i give u permission

Maybe more worth it to spend the money to repaint the walls

maybe like this?