Acoustic Barrier Blankets

ENC’s STC-25 acoustical blankets are designed to block & absorb unwanted noise. Portable & convenient, these blankets come in a variety of vinyl colors.

Environmental Noise Control, Inc’s STC-25 Acoustic Blankets are manufactured using state-of-the-art acoustical composite materials with an engineered design.

ENC’s STC-25 acoustical barrier blankets are designed to provide optimum sound control for blocking and absorbing unwanted noise.  They have been tested by an independent acoustical laboratory per ASTM E-90 and ASTM E-413 requirements and have a verified sound transmission loss.

ENC’s acoustical barrier blankets are fabricated with a proprietary polyvinyl-chloride-coated outer shell, noise-absorbing and blocking material, and an engineered inner core with an X-5 septum barrier.

About the STC-25 Acoustical Barrier Blanket

  • Specs

  • Sound Transmission Class rated in accordance with ASTM E-413
  • Flame Retardant to California Fire Marshall f-419.01 Specifications
    • Length of Char: 3.5, After Flame: 2 seconds
  • Working Temperature: -40°C to 93.3°C
  • Oil Resistant, UV Resistant, Fiber-Free, Anti-Fungal, Self-Drying Poly-Vinyl Chloride Outer Shell with specifically developed inner core septum barrier

STC-25 Sound Transmission Loss (dB)

% Octave Band Center Frequency STC-25 Transmission Loss
63 Hz 8 dB
80 Hz 10 dB
100 Hz 11 dB
125 Hz 10 dB
160 Hz 7 dB
200 Hz 7 dB
250 Hz 11 dB
315 Hz 17 dB
400 Hz 23 dB
500 Hz 28 dB
  • Key Features

  • Designed to be Set Up Close to Noise Source
  • Can be Hung From Almost any Support Structure
  • Portable & Easy to Install
  • Modular Design to Enclose Noise Source
  • Outdoor & Indoor Applications
  • Quick to Assemble & Break Down