Genuine Phonak / Unitron Vented Domes 4.0 – Pack of 10

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Genuine Phonak Vented Domes 4.0 for compatible Phonak and Unitron hearing aids using the 4.0 coupling system. Pack of 10.SizesSmall, Medium and Large.How to chooseMatch the size al ready fitted to your hearing aid. If you're unsure, check the size printed on your existing dome packaging or use our Compatibility Guide.CompatibilityUse only where the existing hearing aid fitting uses a Phonak Vented Dome 4.0. Match the size already fitted.MaintenanceWe recommend replacing domes and filters monthly for improved hearing aid performance and hygiene.Need help? Send us a clear photo of your current dome and hearing aid before ordering. Show more