where can I get a copy of the installation sheet?

Instructions and product info are available on Grohe site

Does this item also include the part that you hook up the water supply too that's attached inside the shower wall? Thanks.

I don't know of any drop elbow fittings that aren't female, therefore you DO need a nipple to connect this UNLESS you have found another non standard method like a male adapter. The depth of your drop elbow from the finished wall dictates the nipple length. A drop elbow is used because it can be screwed to a backing allowing the nipple to be tightened without the pipe twisting or turning.

Is there a Starlight Chrome Grohe version in metal?

no, only plastic, but good quality I reckon. I had doubt, but it holds its shape and coating amazingly well (about 9 years long now)

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Wall Union

Product ID: 186512706

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Details

Size
.5
Material
Plastic
Brand
GROHE
Colour
Chrome
Item dimensions L x W x H
22 x 9.5 x 7
Connector Type
Elbow Union

✨GROHE StarLight finish - lifetime shine

🔩1/2 in. NPT female threads - secure fit

🛠️Wall mount hand shower union - easy install

Description

✨ Elevate your shower game with lasting shine and flawless fit! 🚿

PRECISION FIT - Standard 1/2 inch NPT female threads ensure a leak-proof, professional-grade connection every time.
SLEEK DURABLE - Crafted from high-quality brass with a polished chrome exterior for a modern, stylish look that lasts.
LIFETIME RADIANCE - GROHE StarLight chrome finish resists scratches and tarnish, keeping your shower looking pristine.
TRUSTED BRAND QUALITY - Backed by GROHE’s engineering excellence, elevating your bathroom with reliable performance.
EFFORTLESS INSTALLATION - Wall mount design simplifies setup, perfect for quick upgrades or new installations.

The GROHE Wall Union features a durable brass construction with a scratch-resistant StarLight chrome finish, 1/2 inch NPT female threads for secure connections, and a wall mount design for easy installation—perfect for upgrading your hand shower setup with style and reliability.

Specifications

Size	.5
Material	Plastic
Brand	GROHE
Colour	Chrome
Item dimensions L x W x H	22 x 9.5 x 7 Centimeters
Connector Type	Elbow, Union
Thread Size	0.5 inch
Exterior Finish	Chrome
Thread Type	NPT
Item Weight	0.31 Pounds
Number of Pieces	1
Global Trade Identification Number	04005176103100
Manufacturer	acdelco
UPC	015976013497
Department	Home & Garden
Country of Origin	USA
Item model number	28672000
Product Dimensions	22 x 9.5 x 7 cm; 140.61 g
ASIN	B002ECXTNW

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