ELCSA: High-Performance Elbow HVAC Sound Attenuator
The ELCSA is an innovative elbow-shaped sound attenuator (or silencer) specifically engineered to solve HVAC discharge noise problems. Designed to provide a high dynamic insertion loss, the ELCSA effectively reduces noise while its streamlined design ensures minimal air pressure loss and regenerated noise. Itβs the ideal solution for ensuring a quiet and comfortable environment in any commercial or industrial setting.
Key Features & Construction
- High Noise Reduction: The ELCSA features high-quality, acoustic fiber-filled splitters that provide significant noise reduction, effectively silencing HVAC discharge noise.
- Aerodynamic Splitters: The splitters are designed with radiused ends, which minimizes air pressure loss and keeps regenerated noise to a minimum, ensuring your HVAC system runs efficiently.
- Durable Build: Constructed from a robust 20-gauge galvanized frame with lock seams and a mastic sealant, this sound attenuator is built to last.
- Fiber Protection: The acoustic infill is compressed and protected by a 22-gauge perforated metal sheet, preventing fiber erosion and damage at high air velocities up to 5900 FPM.
- Optimized Performance: Air widths are available in a variety of sizes (3″, 4″, 6″, and 8″) to be customized for your project’s specific noise reduction and pressure drop requirements.
Specifications & Options
- Casing: 20-gauge galvanized steel (18-gauge or 16-gauge options available)
- Splitters: 22-gauge galvanized steel
- Standard Air Widths: 3″, 4″, 6″, 8″
- Minimum Size: 14″ W x 8″ H
- Construction Options: Aluminum or Stainless Steel
- Flange: Standard galvanized Duct-mate flange (35mm) with finished corners.

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