Concealed cistern and wall-hung WC installation system designed for robust, height-optimized mounting
The Grohe Rapid SL 3-in-1 set for WC (product number 39501000) is a complete concealed installation system engineered for wall-hung toilets with an installation height of 1.13 m. The set integrates a Rapid SL frame and support element for WC, a GD 2 flushing cistern with adjustable 6-9 litre dual-flush capability, and a GROHE Skate Cosmopolitan S flush plate in chrome finish. Designed and engineered in Germany, this solution streamlines installation and provides long-term structural reliability in residential and commercial washrooms.
The robust steel frame is self-supporting and suitable for installation on studded walls or solid constructions. It includes front wall brackets for secure mounting and a revision shaft for easy access behind the flush plate. The dual-flush cistern (GD 2) is insulated against condensation and accepts water supply from the left, right or rear, simplifying onsite plumbing connections.
Technical Specifications
- Product reference: 39501000
- EAN: 4005176453878
- Installation height: 1.13 m
- Frame width: approximately 500 mm
- Frame height: 1130 mm
- Flushing cistern: GD 2 6–9 L dual-flush
- Flush plate: Skate Cosmopolitan S chrome (37 535 000)
- Wall brackets: included (38 558 00M)
- Revision shaft: included (40 911 000)
- Suitable for wall-hung WC installation
- Supports standard outlet bend Ø 90 mm
Package Contents
- Rapid SL element for WC (38 528 001)
- GD 2 dual-flush cistern (6–9 litres)
- Skate Cosmopolitan S flush plate, chrome
- Front wall mounting brackets
- Revision shaft for small flush plates
- Fixing hardware and installation instructions
Note: This set includes the concealed installation frame, cistern and flush plate only. It does not include the WC ceramic pan itself or optional adapter accessories for alternative flush plate models. Appropriate outlet bends, inlet/outlet connectors or additional mounting accessories may be required depending on site conditions.






