What year Hunter?
If the speaker covers are the white ones with a perforated plastic grille, and they are made by Seaworthy, they are probably not available any longer.I have Seaworthy model SEA-4612BW, they are 6 3/8" fairly square with rounded corners, and the mounting holes are 4 5/8" apart. The replacement covers were available from Hunter, but not for the last 18 months. The Seaworthy company has discontinued that model and covers are not available.I am looking at replacing the speakers just because the grilles are broken. The speaker itself is fine.I'm looking at eBay for reasonably priced replacements.Anyone have a good solution?