The ENC STC-32 Acoustical Barrier Blankets are manufactured using state of the art acoustical composite materials with an engineered design.

ENC’s STC-32 acoustical barrier blankets are designed to provide optimum sound control for both 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; layers of noise absorbing and blocking material; an engineered inner core with an X-5 septum barrier.

About the STC-32 Acoustical Barrier Blanket

  • Specs

  • Sound Transmission Class rated in accordance with ASTM E-413
  • Engineered to meet UBC/IBC Wind Load Requirements
  • Flame Retardant to California Fire Marshall f-419.01 Specifications
    • Length of Char: 3.5, After Flame: 2 seconds
  • Working Temperature: -40°F to +200°F
  • Oil Resistant, UV Resistant, Fiber-Free, Anti-Fungal, Self-Drying Poly-Vinyl Chloride Outer Shell with specifically developed inner core septum barrier

STC-32 Sound Transmission Loss (dB)

% Octave Band Center Frequency STC-32 Transmission Loss % Octave Band Center Frequency STC-32 Transmission Loss
63 Hz 16 dB 630 Hz 34 dB
80 Hz 20 dB 800 Hz 35 dB
100 Hz 18 dB 1000 Hz 35 dB
125 Hz 16 dB 1250 Hz 36 dB
160 Hz 16 dB 1600 Hz 36 dB
200 Hz 17 dB 2000 Hz 36 dB
250 Hz 19 dB 2500 Hz 37 dB
315 Hz 23 dB 3150 Hz 39 dB
400 Hz 26 dB 4000 Hz 40 dB
500 Hz 32 dB 5000 Hz 43 dB