The SR 90-2 half mask is made of thermoplastic elastomer (TPE) M/L.The mask is equipped with two exhalation valves,which ensures very low breathing resistance.The easily adjustable elastic head harness of the mask is designed as a V-loop and has a large,dished crown plate,which contributes towards a comfortable and secure fit. The SR 307 compressed air attachment can be connected.Tested in accordance with prEN 140:1996 nominal protection factor:50 |