Soundproofing 101




PRIVACY DUCT SILENCER

Our Privacy Duct Silencers are designed to be the best performing insertable option for privacy between rooms. At 60” long and less than 10 lbs, these silencers will significantly reduce sound transmission from both the fan motor and noise created in your home theater, studio, or kids playroom.

Many times the ducting for heat and air is overlooked as a potential flanking path, sometimes reducing the effectiveness of our soundproofing design by 15%. We now have a cost effective, simple to install, solution for just this type problem.

Privacy Duct Silencers are compatible with rigid metal ductwork (round or square), and any flexible ducting. Silencers are sized according to diameter of the existing duct. The installation is as simple as making a 60” cutout in the existing duct and inserting the silencer, taping the joints, and you are done.

Radiated Noise Reduction

  • Terminal box throttling damper noise will not go
    through the attenuator wall into occupied space.
  • Eliminates box-to-box crosstalk noise.
  • To enable calculating the fan noise reduction through
    or past the terminal box to downstream components.
  • To substitute for double-wall duct in space where difficult offsets might occur.

  • Additional Information

    Datasheet

    Duct SizeLengthPrice
    6"60"$150
    8"60"$170
    10"60"$200
    12"60"$230
    14"60"$270

    Order with Us

  • Length5' standard (tip-to-tip)
    Velocity3000 FPM
    Operating Temp0-350° F
    Working Pressure20" WC + and -
    Burst Pressure40" WC
    Metal Core.0055" thick, AL 30003 - H111
    Insulation1.5" thick, .5 lb. density
    R-Value4.5
    Metal SleeveInner Ply .0025" thick, AL 1100 - H19
    Outer Ply .003" thick, AL 3003 - 0

    Typical Silencer Uses

  • Isolate Home Theater noise to adjacent rooms or upstairs
  • Eliminate room to room noise from shared ducts in offices/plants
  • To reduce fan noise from large HVAC units in commercial/hotels
  • Stop fan noise traveling down the main duct to downstream discharges

Construction Detail of Privacy Duct Silencer

Perforated Metal Core:
The Privacy Duct Silencer core is constructed from one ply of perforated and corrugated aluminum with interlocked seams, folded flat and knurled for flexibility and strength.

Fiberglass Insulation Wrap:
The core is then completely wrapped with a blanket of fiberglass insulation.

2-Ply Metal Sleeve:
The exterior sleeve is constructed with two plys of aluminum permanently fused together and corrugated, creating a continuous inner and outer surface that is airtight, flexible, and strong. Inlet and outlet collars are then attached to the ends.