Sounpak® HVAC Silencers
McGill AirFlow offers a complete line of Sounpak silencers for noise control HVAC applications. Sounpak silencers have been designed, tested, and manufactured to ensure the highest performance and most efficient operation at an economical price.

McGill AirFlow has conducted acoustical testing programs on all Sounpak silencers. As a result of these tests, (run in accordance with ASTM standard E477), reliable and accurate performance data is available. This data allows the performance of Sounpak silencers to be easily and accurately predicted, and makes it possible to select the proper model and size to meet specified noise reduction requirements.

The performance ratings are available in easy-to-use tabular form by contacting McGill AirFlow.
Sounpak® HVAC Silencer Construction

Specialized construction features are available for all McGill AirFlow rectangular and round silencers.
Material
Galvanized, paintable galvanized, stainless steel Types 304 and 316, and aluminum
Material Thickness
10- to 22-gauge outer shells
18- to 24-gauge perforated inner baffles
18- to 24-gauge perforated inner baffles
Connections
Flanges, transitions, slip-fit, raw, applied connectors
Acoustical-grade Fill Barriers
Mylar®, Tedlar®, polyethylene, and fiberglass cloth
Acoustical-fill
Standard acoustical-grade insulation, high-temperature acoustical-grade insulation
Sounpak® HVAC Silencer Models

| Rectangular Silencers |
|---|
| Type RSF rectangular, straight, passive silencer with acoustical fill |
| Type RSV rectangular, straight, passive silencer with acoustical fill and a vapor barrier |
| Type RSN rectangular, straight, reactive silencer, no acoustical fill required |
| Type REF rectangular, passive elbow silencer with acoustical fill |
| Type REV rectangular, passive elbow silencer with acoustical fill and a vapor barrier |
| Type REN rectangular, reactive elbow silencer, no acoustical fill required |
| Type RWF rectangular, wide body, straight, reactive silencer with acoustical fill |
Rectangular, straight silencers are available in 3-, 5-, 7-, and 10-foot lengths.Both passive (acoustic filled) and reactive silencers are offered. Passive silencers may be ordered with a vapor barrier film between the fill material and the baffle wall. These silencers are good for plenum velocity to medium velocity applications. Rectangular silencers are available in galvanized steel, paintable steel, 304 and 316 stainless steels, and aluminum.

| Round Silencers |
|---|
| Type CSF circular, straight, passive silencer with acoustical fill |
| Type CSV circular, straight, passive silencer with acoustical fill and a vapor barrier |
| Type CSN circular, straight, reactive silencer, no acoustical fill required |
| Type CEF circular, passive elbow silencer with acoustical fill |
| Type CEV circular, passive elbow silencer with acoustical fill and a vapor barrier |
| Type CEN circular, reactive elbow silencer, no acoustical fill required |
Circular (round) silencers are available in standard inner diameters of 12 to 60 inches. The length varies as a condition of pressure and insertion loss requirements. Applications include low- to high-velocity systems. Passive silencers can be ordered with a vapor barrier between the fill and the baffle wall. Circular silencers are available in galvanized steel, paintable steel, 304 and 316 stainless steels, and aluminum.
Sounpak® HVAC Silencer Applications
HVAC
Fan discharge and intake

