It's for the taller cylindrical air filter that sits low near the passenger side front wheel. It came loose in an accident, hit the floor and exploded!
These cylindrical things are an accident waiting to happen , knock off the bottom cover and they are vulnerable to ingest water at the next puddle. The thing is you don't know its been done until the engine seizes ,
Try and get one for a earlier model ,the square shape, which sits up near the battery. It sit up away from the muck and water which rots the clips holding the lower cover in place.