Velit rooftop air conditioner units have serviceable air filters that are typically cleaned and not replaced.
The filter can be removed by pressing the 3 tabs and pulling down towards you.
You can clean these similarly to how you would clean any screen using gentle dish soap and water.
The screen is very thin and fragile, so use extra care. If the screen comes unattached from the plastic mesh it attaches to, you can use adhesive to reattach it.
