Environmental Noise Control's Quiet World STC-27 Industrial Acoustical Barrier Blankets are manufactured using state-of-the-art acoustical composite materials with an engineered design. ENC's Quiet World STC-27 Industrial Acoustical Barrier Blankets are designed to provide optimum sound control for blocking & absorbing unwanted noise. They have been tested by an independent acoustical laboratory per ASTM E-90 and [...] Read More →