DuctSoxâ, Peosta, Iowa, a leading fabric HVAC air dispersion systems manufacturer, introduces the dBSilencer, the HVAC industry’s first fabric sound attenuator for fabric ductwork systems. The dBSilencer quiets air handling unit (AHU) and variable air volume (VAV) box operational and airflow noise in the 500 to 2,000-Hz octave bands by 28 to 35-dB in offices, libraries, museums, classrooms and other sound sensitive areas.
The patent-pending dBSilencer is available in sizes of 12 to 36-inch-diameter in 2-inch increments and all standard colors. It’s wider than the ductwork it accompanies to accommodate a, four-inch-thick wall of sound-absorbing rock wool covered by a specialized fabric interior wall.
The dBSilencer also offers an optional center bullet version for nearly double the attenuation that’s ideal for larger mechanical equipment, whereas the without bullet version is designed for quieter equipment and variable air volume (VAV) systems. The dBSilencer was successfully tested by Intertek Labs, Cortland, N.Y., under ASTM-E477-2013 criteria. Sound pressure level data was obtained using a Bruel and Kjar pulse analyzer. After a third-party laboratory-review by JGL Acoustics Inc., Issaquah, Wash., lab findings revealed both the center bullet and without bullet versions as comparable to metal-based attenuators at 100 to 500-Hz and superior at 500 to 8,000-Hz ranges.
Both the versions use DuctSox’s patented SkeleCore FTS In-Duct Tensioning System as an internal structural support and for ceiling-mounting independently of the cable or track suspension system. Using SkeleCore in the accompanying duct run is optional.
Other dBSilencer details are:
- At 1,000-fpm, static pressure loss for the non-bullet and center bullet versions are 0.02-w.g. and 0.05-w.g., respectively;
- Custom colors available to match interior designs and fabric ductwork colors;
- Successful beta site tests at the offices of Mi-T-M, an Iowa-based manufacturer of power washing, air compressor and other industrial equipment;
- Available for DuctSox’s Sedona-Xm™, Verona™, TufTex™, DuraTex™, Microbe-X™, Stat-X™ and Rx fabrics;
- NFPA-90 approval for flame and smoke development;
- Included in every dBSilencer is overlap material for seamlessly concealing the fabric/metal collar connection;
- Five-year warranty;
- Less expensive than metal sound attenuators or insulation-lined metal duct;
- Ideal for retrofit as well as new construction projects;
For more information on dBSilencer or other DuctSox textile air dispersion products and accessories, please visit www.ductsox.com or call 866-DUCTSOX.
About DuctSox: DuctSox Corp. (www.ductsox.com), is a Peosta, Iowa-based manufacturer of fabric ductwork/accessories that markets its products globally through HVAC/R manufacturer’s representatives. For more information visit www.ductsox.com, email sales@ductsox.com or call 866-DUCTSOX. DuctSox Corp., 9866 Kapp Ct., Peosta, Iowa, 52068.
