Ceiling Angle Functionality Technical Data the additional installation of a ceiling angle at the height of the inner stringer Module thickness to ensure stability and the necessary load transfer via the stringers. For the Product weight Ultralight/Slim models, an angle may be necessary for ceiling thicknesses of ceiling angles with birch veneer or white HPL coating. Material Slim/Ultralight 18.2cm Multiplex Birch Available Surface Coatings Untreated Birch Veneer Oiled Birch Veneer HPL White raumvonwert GmbH Gwinnerstr. 46 60388 Frankfurt am Main