How do you to take the airbox side cover off

How do you take the airbox side cover off for more air flow? Also can it be put back on if removed? I didn't want to do the airbox mod top, just take the side cover door off. Wondering how it comes off and can it be put back on in future. Or do you have to break some thing to take it off

The door has two hinge pins with circlips holding the pins in place.
The intake noise will be louder.