Acoustic louvers are weather-resistant ventilation openings built with sound-absorbing blades or baffles, so air can pass through an enclosure, plant room, or HVAC opening while noise is cut by up to 20 to 30 dB depending on design. HVAC consultants, and facility managers in India who are specifying acoustic louver panels for generator rooms, air handling units, data centres, and industrial plants, and who need to balance noise reduction against airflow.