shower trap

Hi all, Newbie here. Looking for some advise and help please Back story….. Some years ago my dad had an extension to his house which included a newly built downstairs shower room. Recently he had this downstairs shower room re-fitted/decorated. Quite a simple set up consisting of a sink...

As stated in my other post, I’ve been looking at replacing the trap supplied with my new shower tray with a McAlpine ST90CPB-S. Thing is, they quote a tray thickness of 0 - 17mm and this is where my uncertainty lies. The thickness of my tray is 20mm across its middle, but around the drain it is...