Features: Full frequency subwoofer cup type dust cap is a protective accessory designed specifically for loudspeakers. Mainly use to prevent dust, debris, and external environment from damaging the internal components of the subwoofer. Wear-resistant and waterproof, effectively blocking dust and other debris. Good sealing ensures that the internal components of the subwoofer are not affected by external factors, maintaining original sound quality performances. Strong applicability, suitable for full ranged loudspeakers of different brands and models, easy installation, and good compatibility. Lightweight design, without additional burden on the subwoofer, maintaining original sound effect. Specifications: Component: paper Color: black Size: 19 cores, 25 cores, 38 cores, 50 cores(optional) Size: detail size please refer to pictures Package Includes: 1Pc Full Frequency Subwoofer Cup Type Dust Cap note: Other accessories demoed in the pictures is not included. Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.