ROCA Duplo S Tank Under Window Adjustable Concealed Cistern

Roca Duplo S Adjustable Concealed Cistern for Back-to-Wall Toilets

The Roca Duplo S Adjustable Under Window Cistern is designed to overcome spatial constraints without sacrificing performance. Specifically developed for floor standing back-to-wall (BTW) toilets, this unit can be tuned to fit perfectly beneath windows or within bespoke bathroom furniture. By concealing the cistern within the wall, the Duplo S allows for a minimalist aesthetic that enhances any modern en-suite or cloakroom.

Dynamic Adjustability and Dual Mount Flexibility

With an adjustable height range, it can be tailored to the exact requirements of your installation site. To further its versatility, the Duplo S is designed for dual mount flush plate compatibility; the flush plate can be installed on either the front of the unit or the top. This ensures that your flushing controls remain perfectly accessible and ergonomic.

Whisper Quiet Operation and Structural Protection

This cistern is fully encapsulated in a dense insulation jacket, which serves as a powerful sound suppressor. Beyond noise reduction, the insulation acts as a vital thermal shield, preventing condensation from forming on the exterior of the cistern. This protects your internal walls and bathroom furniture from moisture buildup, ensuring long term structural integrity.

Eco-Efficient Performance and Effortless Care Reflecting Roca’s commitment to sustainability, the Duplo S is equipped with a dual flush mechanism of 6/3 litres. Maintenance is designed to be entirely non-intrusive; every working component is fully accessible through the flush plate aperture.

Key Features

• Adjustable Low Height Profile: Starting at 600mm, this unit is designed for bespoke under window or restricted height installations.
• Dual Option Flush Plate Mounting: Complete flexibility to install your flush plate on the front or the top of the unit to suit your specific layout.
• Optimized for Back-to-Wall Toilets: The ideal partner for floor standing BTW pans, creating a seamless designer finish.
• Acoustic & Thermal Insulation: Fully insulated jacket eliminates the risk of condensation and ensures a premium, quiet flush.
• Adjustable Dual Flush: 6/3 litre flush options helps lower utility bills and reduce environmental impact.
• Professional Specification: Features a 1/2" water inlet and is designed to operate reliably across a wide dynamic pressure range (0.1 – 10 bar).
• Front Access Maintenance: Every internal component is reachable through the flush plate for easy servicing.

About Roca: A Legacy of Innovation

Founded in Barcelona in 1917, Roca has spent over a century at the forefront of the bathroom industry. As a global leader in over 170 markets, Roca blends Mediterranean design heritage with cutting-edge innovation. Roca is dedicated to creating sustainable, emotionally resonant products that enhance the everyday lives of millions worldwide.

Flush Plates available separately.