Replacement dust filters for the Radius® BZ1 speakers. A speaker is located on both the front and back of the Radius BZ1. To access the dust filter, the speaker grill must first be taken off by removing the four screws. After the speaker grill is removed, the old dust filter can be peeled off and the new one can be stuck on by removing the back paper. Once the paper is removed and the adhesive is revealed and it be placed over the speaker.