Protects your driver element and speaker internals  from foreign objects while still allowing the sound to clearly pass.

6.5″ grill  – 4 Bar , 8″ grill  – 4 Bar

10″ grill  – 4 Bar , 12″ grill  – 6 Bar

15″ grill  – 6 Bar , 18″ grill  – 6 Bar