Product information Topakustik® Type 12/4 Distinct and pronounced grooveStrong lines and profilePossible to incorporate T-perforation (increased low frequency performance)High sound absorption characteristics RESOURCES / DOWNLOADS Full InstallationImportant Installation Instructions Edge OptionsWarrantyFull Brochure Data Sheet Request Sample Finish Options Eco Finishes SOUND ABSORPTION DATA RECENT PROJECTS Havas Worldwide IBM Germany Blue Cross Blue Shield Kudelski Group Offices Etrium Energy Efficient Atrium Qegerihalle Performance Venue Compas Restaurant Switzerland University hospital of Lausanne