Allegro Half Mask Constant Flow Airline Respirator 9920 PORTABLE GAS MONITORS AND DETECTORS and a Softspun lining that's

and a Softspun lining that's comfortable against your face

so it won't absorb water

an I’D EVAC descender

tough nylon motor mount and thru-bolted motor and this unit can handle plenty of abuse

Operating Temperatures: Nitrogen Dioxide (NO2)

Allegro Half Mask Constant Flow Airline Respirator 9920 PORTABLE GAS MONITORS AND DETECTORS and a Softspun lining that'sThe 9920 half mask airline respirator from Allegro offers a comfortable silicone facepiece. Low pressure continuous airflow gives continuous protection from airborne chemicals. Intended to be used with air supply provided by an ambient air pump. Popular with spray foam installers and welding applications. Low profile design fits under many welding helmets. Durable silicone rubber is hypoallergenic, resistant to many chemicals, and remains soft even