The SD 40 from Maico is a highly developed silencer specifically designed for noise reduction in roof fans. It features sound-insulating baffles made from abrasion-resistant and non-combustible mineral fiber boards, ensuring effective sound absorption. The SD 40 is designed for a maximum airflow velocity of 20 m/s and is ideal for applications where a quiet environment is required. With a robust housing made of galvanized steel sheet, this silencer not only offers durability but also allows for easy integration into existing duct systems. The SD 40 is an essential accessory for anyone looking to minimize the noise generated by their ventilation systems.

• Maximum airflow velocity of 20 m/s
• Sound-insulating baffles made from non-combustible mineral fiber boards
• Insertion loss of up to 21 dB at 500 Hz
• Robust housing made of galvanized steel sheet
• Suitable for duct diameters of 400 mm.