Vertek/XTC XTC 6-3/4 Round Large Frame Shallow Foam Baffle Pair Protects speakers from water damage and corrosion Improves audio performance of door and panel mounted speakers Self-isolating and self-damping design minimizes door panel noise Keeps contaminants away from speaker cone and voice coil gap Use with full-range speakers, woofers, midbasses, midranges, and coaxial systems