---
product_id: 55478026
title: "Universal Rough-In Box (3 Outlets 1/2\", 2 Inlets Below 1/2\", Installation Depth 75-105 mm, Connection Unit in DR Brass, Pre-Mounted Flushing Plug, No Trim Set Included), 35600000"
brand: "grohe"
price: "€ 119.76"
currency: EUR
in_stock: true
reviews_count: 13
category: "Grohe"
url: https://www.desertcart.ie/products/55478026-universal-rough-in-box-3-outlets-1-2-2-inlets
store_origin: IE
region: Ireland
---

# Installation depth 75-105 mm 3 outlets 1/2 inch DR Brass connection unit Universal Rough-In Box (3 Outlets 1/2", 2 Inlets Below 1/2", Installation Depth 75-105 mm, Connection Unit in DR Brass, Pre-Mounted Flushing Plug, No Trim Set Included), 35600000

**Brand:** grohe
**Price:** € 119.76
**Availability:** ✅ In Stock

## Summary

> 🚿 Elevate your plumbing game with GROHE’s precision-engineered rough-in box — install like a pro, live like a boss!

## Quick Answers

- **What is this?** Universal Rough-In Box (3 Outlets 1/2", 2 Inlets Below 1/2", Installation Depth 75-105 mm, Connection Unit in DR Brass, Pre-Mounted Flushing Plug, No Trim Set Included), 35600000 by grohe
- **How much does it cost?** € 119.76 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/55478026-universal-rough-in-box-3-outlets-1-2-2-inlets)

## Best For

- grohe enthusiasts

## Why This Product

- Trusted grohe brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Stable & Secure Mounting:** Includes a pretensioning stopper and protective cap for rock-solid installation and leak-proof performance.
- • **Pre-Mounted Flushing Plug:** Simplifies installation and maintenance with a ready-to-use flushing plug, saving you time and hassle.
- • **Adjustable Installation Depth:** Fits perfectly within 75-105 mm depth range, ensuring flawless integration behind any wall setup.
- • **Durable DR Brass Construction:** Premium corrosion-resistant brass connection unit guarantees long-lasting stability and reliability.
- • **Precision-Engineered 3 Outlets:** Seamlessly connect multiple water lines with 3 robust 1/2 inch outlets for ultimate plumbing flexibility.

## Overview

The GROHE Universal Rough-In Box is a high-quality, German-engineered plumbing fixture designed for professional-grade installation. Featuring 3 half-inch outlets, an adjustable installation depth of 75-105 mm, and a durable DR brass connection unit, it ensures a stable, leak-proof foundation for your shower or basin mixer setup. Pre-mounted with a flushing plug and equipped with a pretensioning stopper, this installation box streamlines your plumbing project while delivering lasting reliability and water-saving performance.

## Description

From the manufacturer Discover GROHE Our Foundations Quality From the first design sketch to the final product to after-sales services: Our customers can rely on our Made in Germany sense of perfectionism. Technology We constantly drive innovation to enrich your everyday water experience, delivering smart solutions on the path of the digitization of water. Design Our highly awarded design recipe is simple: Merging the contemporary & the timeless into products that feel like they were designed just for you. Sustainability Water is our passion and we strive to protect all of our planet's resources for future generations. Build Your Dream Bathroom & Kitchen with GROHE GROHE's combination of design excellence, advanced technology, quality materials, and a commitment to sustainability makes it a preferred choice for many when it comes to bathroom and kitchen fixtures. Shower Systems Create the shower of your dreams with GROHE's premium systems. Shower Systems Create the shower of your dreams with GROHE's premium systems. Basin Mixers Save water and energy with GROHE Basin Mixers. Basin Mixers Save water and energy with GROHE Basin Mixers. Toilets, Flushing Systems & Flush Plates Design your perfect toilet with GROHE Flushing Systems. Toilets, Flushing Systems & Flush Plates Design your perfect toilet with GROHE Flushing Systems. Kitchen Mixers Upgrade your kitchen with GROHE Kitchen Mixers. Kitchen Mixers Upgrade your kitchen with GROHE Kitchen Mixers. Water Systems Get filtered or kettle-hot water straight from your kitchen tap. Water Systems Get filtered or kettle-hot water straight from your kitchen tap. Renovate your home with GROHE products Start Cube Robe Hook Start Pull Out Mixer Tap Solido Euro Ceramic WC Start Tap with Waste Set Get Professional Blue Pure StartCurve K400 Quartz Composite GROHE Fizz Advanced GROHE CO2 425g Bottle SmartControl 310 Duo Thermostatic Shower Set Thermostatic ShowerSystem Hand Shower Multifunctional Colander GROHE Shaping the Future of Water

Review: Great price - Awesome Quality and great price
Review: Really easy to fit - Bought to replace an existing mixer tap that was in the stud wall behind my shower. Wanted something easy to plumb in and fix properly without messing with levels etc. Was installed in a few hours (once cut out the old broken unit). Existing pipework was easily adapted using additional speedfit connectors. Instructions were clear and very easy to follow. The only thing I would say, and no fault of the manufacturer: if you are installing a square face plate then any "off" lines will be *very very* obvious. So affix the facecover and faceplate then work out your alignment back from that. You are limited to 6 degree float by the internals when you put them in... So easy to fit! Had it done in a few hours (this is for replacing existing unit in a stud wall...from the shower side) 1. Affix a backboard to screw the back to 2. Plumb unit in and pressure test 3. Affix unit to backboard, then use spirit level to get fore/aft tilt and left/right. Pack out behind screws with washers and tighten it all up. 4. Fit the supporting faceplate and clips to lock in place at right depth 5. Fit your wall board (i used a sheet of hardibacker) to the right depth for your tiles + adhesive depth 5b: pressure test again (Im a diyer so paranoid about my plumbing 6. Seal it all in with sanitary sealant 7. Apply thin layer of tile adhesive around the unit cylinder then fix the latex sheath to get a really good seal. 8. Tile, grout and seal etc. or whatever you want to put on top. 9. Install your chosen control unit (I got the square thermostatic mixer... bad choice as my tiling isnt super square :D) Id buy this again if was doing another shower as was so easy to get the levels right... I had it done and

## Features

- 3 outlets 1/2 inch.
- Installation depth 75-105 mm.
- Pretensioning stopper preassembled.
- Stable installation box and protective cap.
- - -

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071FC4TST |
| Assembly Instructions Description | Assembly required. Instructions included. |
| Assembly required | Yes |
| Batteries Required? | No |
| Batteries included? | No |
| Brand | GROHE |
| Colour | Blue |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,239) |
| Date First Available | 20 May 2017 |
| Finish | Polished |
| Global Trade Identification Number | 04005176413469 |
| Grit Description | Medium |
| Handle material | Brass |
| Included Components | Instruction Manual |
| Installation type | Screw-In |
| Is framed? | No |
| Item Package Quantity | 1 |
| Item Weight | 1 kg |
| Item model number | 35600000 |
| Item weight | 1 Kilograms |
| Manufacturer | GROHE |
| Measurement System | Metric |
| Number of Pieces | 1 |
| Number of doors | 2 |
| Number of handles | 1 |
| Number of panels | 1 |
| Part Number | 35600000 |
| Plug profile | Wall Mount |
| Product Dimensions | 18.5 x 18.5 x 17 cm; 1 kg |
| Shape | Rectangular |
| Special Features | Water Saving System |
| Unit count | 1.0 Count |

## Product Details

- **Door style:** Pivot, Hinged
- **Finish type:** Polished
- **Material:** Acrylonitrile Butadiene Styrene (ABS), Brass
- **Product dimensions:** 17D x 18.5W x 18.5H centimetres
- **Style:** Single

## Images

![Universal Rough-In Box (3 Outlets 1/2", 2 Inlets Below 1/2", Installation Depth 75-105 mm, Connection Unit in DR Brass, Pre-Mounted Flushing Plug, No Trim Set Included), 35600000 - Image 1](https://m.media-amazon.com/images/I/61DgG13xUoL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Are these thermostatic or straight mixers- sick of replacing thermostat cartridges in an area with very hard water....**
A: This is thermostatic but not great in controlling the temperature. There is a point very sensitive where the water gets straight too hot or lukewarm when turned back so very difficult to regulate if your desired temperature is around that spot .

**Q: is it easy to replace a mixer at a later date. I hope this is one of those that once installed the top bit (the mixer) can easy be swapped it required**
A: Yes mixer can easily be replaced

**Q: i have grohe 19382000 eurosmart cosmopolitan single-lever bath mixer trim set. will this smart box compatible as concealed part?**
A: Yes. My pump is behind tiles. Only the switch gear - lever for overhead and separate shower head is visible. This bread and butter for a plumber

**Q: Will this work with a salamander water pump. Plumber has stated it must be a low pressure unit due to the pump being used**
A: I have this unit working with a 3bar pump no problems I believe the max bar is even higher than this

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great price
*by D***N on 12 December 2024*

Awesome Quality and great price

### ⭐⭐⭐⭐⭐ Really easy to fit
*by D***E on 4 February 2022*

Bought to replace an existing mixer tap that was in the stud wall behind my shower. Wanted something easy to plumb in and fix properly without messing with levels etc. Was installed in a few hours (once cut out the old broken unit). Existing pipework was easily adapted using additional speedfit connectors. Instructions were clear and very easy to follow. The only thing I would say, and no fault of the manufacturer: if you are installing a square face plate then any "off" lines will be *very very* obvious. So affix the facecover and faceplate then work out your alignment back from that. You are limited to 6 degree float by the internals when you put them in... So easy to fit! Had it done in a few hours (this is for replacing existing unit in a stud wall...from the shower side) 1. Affix a backboard to screw the back to 2. Plumb unit in and pressure test 3. Affix unit to backboard, then use spirit level to get fore/aft tilt and left/right. Pack out behind screws with washers and tighten it all up. 4. Fit the supporting faceplate and clips to lock in place at right depth 5. Fit your wall board (i used a sheet of hardibacker) to the right depth for your tiles + adhesive depth 5b: pressure test again (Im a diyer so paranoid about my plumbing 6. Seal it all in with sanitary sealant 7. Apply thin layer of tile adhesive around the unit cylinder then fix the latex sheath to get a really good seal. 8. Tile, grout and seal etc. or whatever you want to put on top. 9. Install your chosen control unit (I got the square thermostatic mixer... bad choice as my tiling isnt super square :D) Id buy this again if was doing another shower as was so easy to get the levels right... I had it done and

### ⭐⭐⭐⭐ Does the job but not easy to set up via the instruction pictures provided
*by P***J on 1 April 2025*

Very happy with this controller and it looks great and works very well but it’s a bit fiddly to assemble and set up and you need a thermometer to set the temperature at 38c. The instructions in the box are not easy to follow as they are all pictures with very little text so I used YouTube to find a video which made it much clearer. Assembling the two control knobs is very fiddly too.

## Frequently Bought Together

- GROHE Rapido Smartbox - shower systems - universal concealed installation unit - DN 15-35600000
- Grohe 28672000 Relexa Shower Wall Union, 0.5-Inch Threaded Connection, Starlight Chrome
- GROHE 35601000 Rapido Smartbox Universal Rough-In Box, Starlight Chrome

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-19*