GROHE 127804 Pair of Adaptors for UK Fittings 15mm Compression by 3/8 Inch BSP Male Thread, Brass - Amazon.com
GROHE Rainshower 0.5 in. Shower Wall Union in StarLight Chrome 26635000 - The Home Depot
GROHE GrohSafe 3.0 Pressure Balance Valve Rough with Flush Plug with Elbows with PEX Crimp Outlets with Service Stops 35115000 - The Home Depot
GROHE | Euphoria Exposed Shower System Easy Install Adapters | Installation Video - YouTube
GROHE Adaptor Kit for GrohSafe 3.0 Trims to GrohSafe 2.0 Valves 14140000 - The Home Depot
Thermostatic Shower System
WE INSTALLED A SHOWER VALVE // TLF 26 - YouTube
Tub Spout
GROHE Start QuickFix Robe Hook (Metal, Concealed Fastening, Including Screws and Dowels, Extra Easy to Fit QuickGlue), Size 45 mm, Chrome, 41173000 - Amazon.com
Lever Adaptor
Grohe 46.265.000 Eurodeck Lever Adapter - FaucetDepot.com
Adapter
Carvedexquisitely Shower head Elbow Adapter, Shower Arm Elbow Adapter for Hand Showers and Wall-mounted Showers 90 Degree Chrome - Amazon.com
Grohe - Easy Installation Adapter 1/2Npt To G1/2 – PlumbTile
Help fitting a Grohe shower bar please - General Plumbing - BuildHub.org.uk