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Passive NRR 25dB Active Noise Reduction Additional 20-22dB @ 100Hz Microphone Type Noise Canceling Electret (Amplified) Speaker Impedance 300 ohm Cord Type 5 Foot Straight Plug Type
But it’s right
Headpad/Hardware: Super-Soft
Constructed with durable tensile wiring and shielded polyurethane cord with insulation for added strength and protection from temperature extremes and abrasion
Pocket Smoke Mask Aeronautical Sectional Charts Passive NRR 25dB Active NoisePocket Smoke Hood achieved the Good Design Award and ranks as one of the worlds top three Industrial Design Awards in Asia. Tested by the Industrial Research Institute in the Personal Protective Equipment category. How it Works NASA graded high temperature resistance Polyamide Film resists heat up to 932 degrees The seven layer filter stops and blocks toxic gases made from non woven and activated carbon fibers Filters more than 20 minutes of toxic