About this item The complete package includes 4 speaker foam rings, measuring 0.98'D x 7.68'W x 7.68'H, suitable for 6-inch to 7-inch car door speakers. Before purchasing, please measure your speakers to confirm compatibility for better fit and functionality. This speaker foam minimizes unnecessary echoes and enhances overall audio performance while effectively absorbing door noise. Its internal structure is designed to integrate with the audio system, reducing sound diffusion and providing clear and superior speaker sound. Made from quality EPDM material, this speaker foam is soft, highly resilient, waterproof, and extremely durable, suitable for various weather conditions. Sufficient thickness and density provide better noise reduction capabilities, delivering an ultimate car audio experience. These speaker foam rings come with a self-adhesive backing for easy installation, requiring no other tools or professional assistance. Simply wipe the installation area clean, then stick the fo