Specification Brand : uxcell BulletPoint1 : 90mm overall diameter, the dome height is 18mm. BulletPoint2 : The lip on the round edge would keep your speaker(coils) sealed and stop the dust and humidity. BulletPoint3 : Made of high grade paper. Strong enough to resist scratch and stretch. BulletPoint4 : Application. Dust cap protective dome is one of the maintenance or repair parts for speaker, woofers, subwoofer, and coils. BulletPoint5 : Installation. Remove the defect cap carefully (Use a tweezer, tape or hook, do not hurt the coils) and clear the bonded circle. Gluing and attaching a suitable new cap to finish the work. ConnectivityTechnology : Auxiliary ControllerType : Voice Control ControlMethod1 : application ControlMethod2 : voice ItemName : uxcell Speaker Dust Cap 90mm/3.5" Diameter Subwoofer Paper Dome Coil Cover Caps ItemPackageDimensions_Height : 14.1 centimeters ItemPackageDimensions_Length : 2.7 centimeters ItemPackageDimensions_Width : 10 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : dust-caps Manufacturer : uxcell Material : paper ModelNumber : a19032200ux0459 MountingType : Flush Mount PartNumber : a19032200ux0459 PowerSourceType : Corded Electric ProductDescription : 90mm Speaker Dust Cap Coil Cover Overall Diameter: 90mm(3.5") Height: 18mm Material: Paper Shape: Dome Application: Dust cap protective dome is one of the maintenance or repair parts for speaker, woofers, subwoofer, and coils. Installation: Remove the defect cap carefully (Use a tweezer, tape or hook, do not hurt the coils) and clean the bonded circle. Gluing a circle around the coil base on the cap's size, attaching the new cap to cover the coil and make sure it was sealed. Remove the remaining glue when everything is good. Package Content: 1 Pcs 90mm Speaker Dust Cap