01
Cleaner Bathroom Lines
The tank sits inside the wall. Only the toilet pan and flush plate stay visible. The result is a minimal, contemporary look that pairs with any tile or stone finish.
GROHE Rapid SL & Rapid SLX
GROHE Concealed Cistern Systems
Wall-hung installation frames engineered in Germany. Load-tested to 400 kg. Trusted in Pakistan for silent flushing and clean bathroom lines.
The Wall-Hung Bathroom Starts Behind the Wall
A concealed cistern is the framework that makes a wall-hung toilet possible. The steel frame carries the load. The tank inside holds and delivers water. The flush plate on the finished wall is the only visible part.
GROHE has been refining this system since 1985. Every Rapid SL and Rapid SLX frame is pre-assembled at the factory, tested to hold 400 kilograms, and built with Whisper technology to keep flush noise low. The result is a bathroom that looks cleaner, feels quieter, and gives you back the floor space a standard tank would consume.
CASA BATH stocks the complete GROHE concealed cistern range for the Pakistani market. Every unit is sourced directly from GROHE and delivered nationwide with installation guidance for your plumber or contractor.
Why Homeowners in Pakistan Are Switching to Concealed Systems
02
Six Inches of Reclaimed Space
A standard exposed tank projects roughly six inches into the room. Concealing it recovers that space, valuable in compact powder rooms and en-suites.
03
Easier Cleaning
The floor stays clear under a wall-hung pan. There is no base ring, no tile joint under the toilet, and no hidden dirt trap around the tank.
04
Silent Flush
GROHE Whisper technology dampens the sound of the fill valve and flush. This matters in apartments, guest baths, and rooms shared with bedroom walls.
05
Water Efficiency
Every GROHE cistern uses a dual-flush mechanism with 3 and 6 litre options. GROHE EcoJoy reduces water use by up to 50 percent compared to older single-flush tanks.
06
Long Service Life
The steel frame carries a lifetime structural warranty. The internal valves are serviceable through the flush plate opening, meaning no wall demolition is ever required.
Product Range
The GROHE Concealed Cistern Range
Two engineered systems for two levels of installation. Rapid SL is the trusted universal solution. Rapid SLX is the newer, future-ready system with electric integration.
Rapid SL System
Rapid SL 3-in-1 Set for Wall-Hung WC (1.13 m)
Standard installation height
The complete installation package. Includes the pre-assembled steel frame, the GD 2 concealed cistern with dual-flush mechanism, and a chrome Skate Cosmopolitan flush plate. Sized at 1.13 m for standard bathroom installations.
- Frame material: Powder-coated self-supporting steel
- Load capacity: 400 kg tested
- Installation height: 1.13 m
- Dual-flush volumes: 3 L / 6 L (with optional 4.5 L setting)
- Water supply: left, right, or rear entry
- Noise class: GROHE Whisper technology
Rapid SL System
Rapid SL Low-Height Set (0.82 m)
For under-window installation
The compact version of the Rapid SL system. At 0.82 m, this frame fits below windows and in constrained wall spaces without sacrificing performance or load rating.
- Installation height: 0.82 m
- Load capacity: 400 kg tested
- Same GD 2 cistern and dual-flush mechanism as the standard model
- Skate Cosmopolitan chrome flush plate included
- QuickFix connection system for faster installation
Rapid SLX System
Rapid SLX Concealed Frame for Wall-Hung WC
Future-ready with electric integration
The next-generation concealed system. Rapid SLX comes with a built-in electric socket and water connection behind the wall, ready for shower toilets, night lights, and smart bathroom electronics you may add later. The fully adjustable flow manager suits rimless toilet pans.
- Integrated electric socket behind the wall
- Adjustable flow manager for rimless WCs
- Compatible with GROHE Sensia shower toilets
- Standard 1.13 m installation height
- GROHE Whisper technology and EcoJoy dual-flush
Buying Guidance
Choosing the Right Frame for Your Bathroom
01
Measure Your Wall Cavity
For standard installations, choose the 1.13 m frame. For low walls or under-window fitting, choose the 0.82 m frame.
02
Check Your Water Supply Direction
GROHE frames accept supply from left, right, or rear. Confirm your plumbing layout with your contractor before ordering.
03
Match the Right Flush Plate
The Rapid SL sets ship with a Skate Cosmopolitan chrome plate. If you want a different finish or design, choose from the GROHE flush plate range separately.
04
Plan for the Future
If you may add a shower toilet or smart WC later, choose Rapid SLX. It comes pre-wired with an electric socket behind the wall.
05
Choose Your Toilet Pan
GROHE frames are compatible with most standard wall-hung toilet pans, including rimless models. Contact CASA BATH if you need pan recommendations.
Questions & Answers
Frequently Asked Questions
Yes. The Rapid SL frame is designed for both new construction and renovation. It can be fitted in front of a solid masonry wall or built into a new stud wall. Your contractor will need to plan the wall depth accordingly, typically 145 mm minimum for the frame plus finishing.
All GROHE cisterns are serviced through the flush plate opening. When the plate is removed, the fill valve, flush valve, and mechanical components are accessible without any wall demolition. This is a defining feature of the Rapid SL and SLX systems.
Rapid SL is the standard universal system trusted in millions of installations worldwide. Rapid SLX adds an integrated electric socket and water connection behind the wall, making it ready for future upgrades like shower toilets or smart bathroom electronics.
The Rapid SL frame is self-supporting and does not require floor anchoring for stud wall installations. For masonry installations, the frame is fixed directly to the wall behind. All fixing hardware is included.
No. GROHE cisterns use Whisper technology, which combines low-noise fittings with acoustic insulation. Fill and flush noise is minimised, making these systems particularly suitable for apartments and rooms shared with bedroom walls.
GROHE provides a 5-year manufacturer warranty on all concealed cistern systems supplied through official distributors. CASA BATH honours this warranty for all products sourced through our channel.
Yes. CASA BATH delivers the complete GROHE range across Pakistan, including Karachi, Islamabad, Rawalpindi, Faisalabad, Multan, and smaller cities. Delivery timelines vary by location and are confirmed at the time of order.
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