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

6.5″ grill  – 4 Bar (35mm excursion clearance), 8″ grill  – 4 Bar(52mm excursion clearance)

10″ grill  – 4 Bar(52mm excursion clearance) , 12″ grill  – 6 Bar(52mm excursion clearance)

15″ grill  – 6 Bar ,(52mm excursion clearance) 18″ grill  – 6 Bar(52mm excursion clearance)