Don't wast your time
Do not but this sub woofer grille it does not fit the db subs. The problem its you have to use the same screw holes for the grille as you do for the sub its self. This would not be a problem however grille is too deep and the outer edge holds the grille off the face of the woofer. This creates a gap between them and does not hold the woofer its self down to the enclosure . What a complete waste of my time. I called polk to confirm the correct grille which it was. I also let them know the issue. Due to the incompatance of this company i will not purchase polk audio again. I will also warn others to stay away.
Pros: I now know to stay far away from polk audio
Cons: can't even be used as a frisbee