dbmorris

This is my first post here and probably an easy one. My stock floor mounted subwoofer has collected tiny pebbles over time that fit thru the tiny holes. I planned to pop the grill, clean them out and be done with it but the grill won't come off that easily. There appears to be 2 flat slats in the front/rear that also hold it down. No idea why. Anyone have success removing it? I flipped the speaker on end, cranked the stereo and vacuumed it clean but there has to be a better way.