Technical Data
Diameter: 130mm (5.1 inch)
Material: Plastic 
 
Speaker Dust Cap 
• It can protect the speaker from dust and other debris in the environment, helping to extend the life of the speaker.
• In the distance it will help a good pronunciation of treble and bass.
• Helps to improve the appearance and finish of the speaker.
It retains its shape despite sound pressure, has slight elasticity, and can bounce and bounce back. Not easily deformed.