A: I think because the external design of the showers areconstantly changing to keep up with “fashion” and other manufacturers designsit is not possible to always have the same fixing holes etc.
However......Triton have lead the way with the T80Z this is theirRetro fit shower which has many fixing holes that will match some of thierolder models and allows for different pipe and cable entries, see video
.
http://www.showerdoc.com/new-showers/triton/electric-showers/ZTRITO-SP8008ZUFIT-Triton-T80Z---8-5kW-(White-Chrome)
See Video at the footof the page
Mirahas followed on with the Jump and the new Sport which will retro fit many of theirprevious models.
Answered 29 days ago | The doc