Rectangular Duct Silencers – High-Performance Sound Attenuators by Kinetics

Kinetics Group offers engineered Rectangular Duct Silencers designed to deliver maximum noise reduction for HVAC duct systems across commercial, industrial, and institutional applications. Built to meet the most demanding acoustic requirements, our silencers provide superior airborne noise control, low pressure drop, and long-term reliability in harsh operating environments.

Our rectangular sound attenuators are custom-designed to integrate seamlessly into any HVAC system, ensuring optimal airflow performance while reducing unwanted fan and air-movement noise. All Kinetics silencers undergo independent testing in NVLAP-accredited laboratories in accordance with ASTM E477-06a and AMCA 1011-03, ensuring industry-leading acoustic performance.

Key Features of Kinetics Rectangular Duct Silencers

• Aerodynamic rounded noses engineered to minimize pressure drop and improve airflow.

• Absorptive acoustic baffles inside a duct-like casing for highly effective noise suppression.

• Standard 1 in. (25.4 mm) slip flanges with optional extended flange sizes upon request.

• Optimized geometry and construction for high insertion loss and low regenerated noise.

Applications

Kinetics rectangular duct silencers are ideal for reducing noise in:

• Fan inlets and discharges

• Air Handling Units (AHU/RTU)

• Cooling towers

• Radiators and condensers

• Mechanical rooms and ventilation systems

• HVAC duct systems in commercial, institutional, and industrial buildings

• Cross-talk applications (shared ventilation paths between rooms)

Available Types

Kinetics manufactures a full range of rectangular sound attenuator configurations, including:

• Straight Dissipative Silencers

• Elbow Dissipative Silencers

• Cross-Talk Silencers

• Reactive (No-Fill) Silencers – Straight & Elbow Types

• Axial Cone Silencers

• Transitional Silencers

• Fully Custom Silencers tailored to project requirements

Optional Accessories & Customization

• Square-to-round transitions

• Angle flanges with matching hole patterns

• Special casing designs for unique site constraints

• Modular silencer assemblies using single or multiple units

Silencer Configuration

Rectangular duct silencers can be built using multiple silencer units depending on system size:

• Each full silencer unit includes two acoustic half-baffles and a central air passage.

• Units can be combined to achieve required dimensions — e.g., a 24 in. (610 mm) silencer may be a single 24 in. unit or two 12 in. (305 mm) units.

• This modularity allows Kinetics to provide precise design flexibility, ensuring optimal acoustic and aerodynamic performance for every project.

Why Choose Kinetics Sound Attenuators?

• Independently tested for verifiable performance.

• Optimized airflow characteristics ensure lower energy consumption.

• Custom-engineered solutions for any HVAC noise control challenge.

• Built to global standards for unmatched acoustic reliability.