Barcelona Airport?s Terminal A extension, designed by architects the House of Bofill, has a rhombus shape at its heart with a floor area of 6,000m2. Covering the extension is Armstrong?s Gema Metal Ceiling System to provide both acoustic performance and attractive styling. The Gema System is designed for quick, simple installation. Armstrong claims that it has helped to create a bright and friendly environment, which is well suited to relaxing before flying.