Airmaster high performance absorptive type Acoustic Louvers attenuate undesirable noise from being transferred into the environment with minimal air-flow restriction. Designed to be architecturally appealing in addition to having sturdy construction with maximum acoustic performance and minimal pressure drop. Frame is inverted U shaped having 25mm flanges with flat blade designe as standard. Available in both single and double banks. Louver Depth above 300mm will have double bank construction with chevron blade design.