Circular straight low-built silencer LRCNA 400.1000

Straight sound attenuator with circular connection and low installation height. LRCNA dimensions makes it particularly suitable for residental ventilation, installation above suspended ceilings, or where space is otherwise limited. The casing is made from galvanized steel and an inner tube made of steel sheet. The inner tube is designed with small openings to withstand mechanical cleaning without interfering with insertion loss. For safety and durability, mineral wool is used as the acoustic media. A nonwoven cloth is inserted between the inner tube and the attenuation material, to prevent fibres from the insulation getting into the duct system. Fulfils tightness class D. Technical data for insertion loss, pressure drop, and selfgenerated noise is based on test conducted in accordance with ISO 7235. For custom solutions, please contact Lindab sales.