Key-Lock Concealed Ceiling System

Key-Lock Concealed Ceiling System

Our KEY-LOCK Concealed Ceiling System is designed to produce a high-quality structure for a flush or featured finish to your plasterboard ceiling. You can direct-fix or fully suspend your KEY-LOCK ceiling; use the tabs above to view both options.


Our KEY-LOCK® Concealed Suspended Ceiling System enables the mixing of primary (Top Cross Rail) and secondary components (Furring Channel) in order to increase spans and suspension fixing points and maximise structural design.

The components within the system have been specially designed so that they simply snap into sections, without mechanical tools being required. This offers Contractors an easy to install ceiling system and speeds up time on site.

The Top Cross Rail and Furring Channel sections have rolled edges to make them safer to handle and with our state-of-the-art manufacturing processes, we can also produce these profiles in custom lengths and radiusses.

When you require a suspension depth of more than 200mm, a fully suspended KEY-LOCK® ceiling system is the way to go. It can also be used in fire-rated and non-fire rated situations, and designed to achieve both acoustic and seismic requirements.

Since it's intial introduction over 50 years ago, the Rondo KEY-LOCK® Concealed Suspended Ceiling System has been used around the world in some remarkable projects including the famous "sky ceilings" at Venetian Casino in Macau.


  • Primary and secondary profiles available in custom lengths or radiusses.
  • Able to be engineered designed for external use, e.g. Soffits.
  • Base Material Engineered from G2 BlueScope Steel for Strength and reliability.
  • Rondo range of ceilings can interlock with each other in the same ceiling area, providing specialised ceilings after partitioning

Suitable for



Key-Lock Components

Key-Lock Components

Choose your category

Product Installation and Design ManualsQuick Reference Product Guide – Suitable for most Contractors and DIYers

KEY-LOCK Installation

Guide in English


KEY-LOCK Installation

Guide in Chinese


Professional Design Manual – for Industry Professionals including Contractors, Architects, Specifiers & Builders

Ceilings Cover

KEY-LOCK Concealed Ceiling System

KEY-LOCK section of the Rondo Professional Design Manual

Design and installation of KEY-LOCK® Concealed Ceiling Systems. Includes direct-fix and suspended ceiling systems using furring channels and battens, bulkheads, curved ceilings, control joints and provides span and load tables.

Full Rondo Product Design Manual

Rondo Professional Design Manual including all sections

The complete Rondo Professional Design Manual covers all Rondo Ceiling and Wall Systems, as well as complementry products. Please note: the Manual is 250+ pages and download is 16.3MB.

Product Order Forms

Radiused Furring Channel and Top Cross Rail Order form

Rondo FORM

To order Radiused Furring Channel, and Radiused Top Cross Rail ceiling sections, download the KEY-LOCK® Radius Order Form and submit to your nearest Rondo Office.

Key-Lock® Animation