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Treatment Strategy

  • PathIndirect

Application Use

  • Architectural Walls/Ceilings
  • Environmental
  • Industrial In-plant
  • Industrial New Con.
  • Architectural Finishes


Perforated Metal Absorbers

Abuse Resistant Absorption Panels Combine Durability With Maximum Acoustic Performance and an Attractive Appearance


Typical HUSH CLAD™ "backless" panel construction. Intermittent mounting of HUSH CLAD™ wall panels with film wrap and offset brackets.



  • Available in standard and custom sizes
  • Standard 2" and 4" thicknesses with NRC absorption ratings to 1.00 (NRC of "perfect absorber" = 1.00)
  • Available with film wrap and spacer for high humidity or dusty environments
  • Can be flush mounted or with offset brackets
  • Class A fire rated
  • Intermittent or continuous mounting
  • Rugged steel construction with perforated face sheet
  • Galvanized or painted construction
  • Attractive appearance
  • Available with powder coated finish
  • Wastewater treatment plant blower and pump rooms
  • Engine test cells and other test chambers
  • Diesel engine and generator vaults/mechanical rooms
  • Gyms and multi-purpose rooms
  • General manufacturing
  • Prison day rooms
  • Power plants and utilities
  • Mass transit systems
  • Press and printing shops
  • Metal fabrication shops
  • Convention centers and entertainment complexes


About BRD HUSH CLAD™ Absorber Panels:

Continuous mounting of HUSH CLAD™ panels on walls & ceiling of a concrete generator vault.

HUSH CLAD™ metal absorber panels utilize a highly absorptive mineral wool or fiberglass acosutic insulation to fill a channel perimeter frame with protective perforated metal skin on one side.  The back side of the panels has retaining straps to hold the insulation in place but are otherwise "backless".  Acoustic energy is absorbed in the acoustic fill after passing through the perforated front screen which is acoustically transparent but offers maximum abuse resistance.  Optional film wraps with spacers are available to protect the insulation from moisture and other adverse conditions in hostile environments.


Product Descriptions and Acoustic Performance (NRC)
Product Thickness Standard Widths Standard Lengths Custom Sizes 2 Mil Film Wrap Perf Spacer Perf Gauge (Ga.) Frame Gauge (Ga.) Back Straps (Ga.) NRC
HC-200 2" 1', 3' & 4' 6', 8' & 10' Yes No No 22 20 18 .95
HC-200-FW 2" 1', 3' & 4' 6', 8' & 10' Yes Yes No 22 20 18 .95
HC-200-FWS 2" 1', 3' & 4' 6', 8' & 10' Yes Yes Yes 22 20 18 1.10

Panel Coverage and Placement

Proper coverage will vary with the area size and shape, location of noise sources and location of key receiver(s) (people).  If building surfaces in the area to be treated are hard/reflective, as little as 30% to 40% coverage can be effective.  Spaces between HUSH CLAD™ panels do not significantly reduce performance.  Concentrating panel coverage on surfaces closest to the noise source(s) is an effective strategy to attain maximum reduction of reflective noise and echoes.


  • 4" thick construction
  • Finish painting to customer specs
  • "H" joiners and flashing for continuous or monolithic installations
  • Offset brackets and mounting hardware
  • Field erected built-up systems in kit form
  • All custom sizes and cutouts
  • Aluminum, stainless steel and other custom construction materials
  • Corrugated designs available
  • Can incorporate fiber fre insulation
  • Handles and/or lifting lugs