The following Stanza 9.5 kW shower is the most suitable retro-fit replacement model:
Stanza 9.5 white
The showers below are also suitable replacements although some alterations to pipework and wiring may be required:
9.5 se - with a gloss white finish
9.5 cse - with a satin chrome finish
9.5 gse - with a stylish graphite finish