The level change creates an opportunity to provide a clear definition for the openings. Here is a presentation of practical advice for different installations.
Ecophon Focus™ Wing - gentle aerofoil shape
Ecophon Curved coffer panel - a soft level change
Connect Etage - two extrusions form a desired level difference
Connect F-trim 10/Focus Quadro E - easy fixing of level changes
Connect Vertical - a metal sheet gives a basic level change