Domes used for all Unitron receiver in the canal hearing aids and slim tube models. Unitron domes come in three styles (open, closed and power) each with three sizes (small, medium and large). The small open and closed domes measure approximately 6mm across the bottom, the medium measure approximately 8mm and the large domes measure approximately 10mm. The power domes are larger. The small measures approximately 10mm across the base, the medium measures approximately 11mm and the large measures approximately 13mm. Each order is for one dome.
Note: Unitron no longer produces the clear domes. All domes will be the dark gray color.