Self-supporting trays on concealed frame


  • Product description
  • Features
  • Installation method


EC2 J, or more commonly known as Hook-On cladding, is a self-supporting metal cladding overlapped with an invisible J-type supporting structure. The grids are perpendicular to the facades, following the layout plan. The panels are made of 5 to 8/10th-thick sheet steel, perforated or unperforated, with a wide choice of colors. The trays, with sharp, abutting edges, have two distinct folds on either side of the tray to position one on top of the other on the J-shaped support profile. Each tray can be dismantled by lifting and simultaneously handling the adjacent tray. Access to the plenum for maintenance is simplified, and the ceiling retains its monolithic appearance.


Open-plan offices, meeting rooms, reception areas…

The materials

Galvanized steel 0.5 to 0.8 mm thick, depending on bin width.


Standard widths 300 / 600 / 675 mm
Other widths on request.
Lengths within self-supporting limits
(675 x 1800 mm maximum)


– Pre-painted white 137 (similar to RAL 9003)
– Post-lacquered polyester powder paint RAL :

– All other RAL colors on request

Light reflection

Report CSTB EMI 18-26077242-1 :

Up to 88% post-lacquered RAL 9016
Summary in the Finishes section of the catalog

The fire

Reaction to fire (according to EN 13501-1)

Euroclass A1 for products :

– Unperforated pre-painted sheets
– Pre-painted trays with non-woven fleece or rock wool lining

Euroclass A2-s1,d0 for products :

– Post-painted trays with or without lining


Sound absorption measured in accordance with NF EN ISO 354.
Acoustic certificates on request


Standard :

On request :


Special cut-outs for luminaires and HVAC equipment
Hot / cold activation


Metal ceilings are durable and easy to clean.
For dust: Dry cleaning with a soft cloth or vacuum cleaner with soft bristle brush.
For stains: Clean with a damp cloth soaked in a non-abrasive cleaner diluted in water. For persistent, greasy stains, diluted alcoholic solutions can be used.

The environment

100% recyclable ceiling, odorless, easy to maintain and non-generating of dust, particles or vapor.
No VOC or formaldehyde emissions.
(Class A for rockwool-based trays).
EHDS sheet available on the INIES website (

All special profiles available on request

Installation according to DTU 58.1

Frames: Panels installed under invisible Profil J PREC J framing.
Suspension at 1200 mm centres, starting 300 mm from the wall. The J profiles are
fixed perpendicularly under a commercial primary framing.

Edges: Panels are installed on a single edge angle.


Opening the EC2 J panel: Push vertically, then move sideways to escape the hanging


1- EC2 J tray
2- REC L edge angle
3- Supporting profile J PREC J