SONAS Concealed Cistern for Back-to-Wall WC Units

SONAS Concealed Cistern for Back-to-Wall WC UnitsThe reliable heart of your modern bathroom. The SONAS Concealed Cistern is the professional choice for creating a sleek, minimalist look in any bathroom or cloakroom. Specifically designed for use with back to wall toilet pans and furniture units, this cistern is hidden from view, leaving only your choice of stylish flush plate visible. Its universal design makes it compatible with a wide range of furniture brands and stud wall installations.

The reliable heart of your modern bathroom. The SONAS Concealed Cistern is the professional choice for creating a sleek, minimalist look in any bathroom or cloakroom. Specifically designed for use with back-to-wall toilet pans and furniture units, this cistern is hidden from view, leaving only your choice of stylish flush plate visible. Its universal design makes it compatible with a wide range of furniture brands and stud-wall installations.

Flexibility is built-in. The cistern features a dual-flush valve that is easily adjustable between 6/4L or 3/6L, helping you save water without compromising on performance. Uniquely designed for both front and top operation, it can be installed in a variety of heights and furniture depths. Built from high-density, impact-resistant plastic, this unit is engineered for quiet filling and long-term leak-free operation.

Key Features

• Universal Compatibility: Designed to work perfectly with all standard Back-to-Wall WC pans.

• Flexible Operation: Suitable for both front and top-mounted flush plate installations.

• Dual Flush Technology: Adjustable 3/6L flush valve to optimize water efficiency.

• Compact Slimline Design: Ideal for installations within bathroom furniture or narrow stud walls.

• Quiet-Fill Valve: Engineered to minimize noise during the refill cycle.

Technical Specs

• Width: 582mm

• Height: 510mm

• Depth: 145mm - 200mm (Adjustable)

• Flush Volume: 6/4L (Adjustable to 3/6L)

• Inlet Position: Side entry

• Guarantee: 2 Years

Norbreck Expert/Design Tip

"The Unit Essential" — If you’re buying a back-to-wall furniture unit, this is the cistern you need. Expert Tip: The fact that this cistern can be accessed from either the top or the front is a lifesaver for maintenance. Always ensure your installer leaves the top lid of your furniture unit removable!