High capacity, modular louvered face directional diffusers blend harmoniously with architectural details and are available with a wide array of frame styles for easy integration with modular ceiling systems. The SMD/AMD features large square and rectangular inlets for reduced inlet velocity, resulting in low sound and pressure drop even at high airflows. The modular louvered face diffuser is highly configurable with multiple core styles, airflow patterns, and optional features to tailor this product to specific applications.