Alan Manufacturing, Inc
3927 East Lincoln Way
Wooster, Ohio US

Phone: (800) 435-2526 or (330) 262-8077
Fax: (877) 333-2526 or (330) 262-1556
Email: alansteel@alanmfg.com
Website: www.alanmfg.com
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ALAN's Duct Silencer reduces noise traveling through ductwork.

Order Code: Duct Muffler-"Size"
Unit of Measure

Specifications

Diameter

 N/A 5 in

Sound Reduction at 250 Hertz (Hz)

 N/A 11.9

Sound Reduction at 500 Hertz (Hz)

 N/A 21.2

Sound Reduction at 1000 Hertz (Hz)

 N/A 27.5

Unit Weight

 N/A 5.75 lb

Length

 N/A 24 in

Shape

 N/A Round

Industry Standards

 N/A National Fire Protection Association (NFPA) 90A National Fire Protection Association (NFPA) 90B Underwriters Laboratories (UL)

Features

Features

 N/A
  • Available in 5", 6", 8", 10" and 12" diameters
  • No airflow restriction
  • Maintenance free
  • Easy to install
  • Building Code Compliant, Meets NFPA Standards 90A and 90B
  • UL Listed, Class I Air Duct
  • Install in New or Existing ductwork

Note

Note

 N/A Measurements under standard laboratory conditions at 180 cm from orifice in dBA.