Show im full protection against dust the filters are of wool felt this allows natural breathing and yet catches finest dust ahe positive flutter or ex haus causi of pure gum allows exhaled air to escape yet holds back dust when inhaling 4 far superior to ordinary disc type the aluminum s shell hell body fits all types of faces the special cushion is of non blooming nontoxic non toxic nonirritating non irritating gurn gum so designed as to prevent skin irritation lasts longer than inflated cushion can be W worn orn with goggles interchangeable PARTS MEAN ECONOMY any of the parts can be bought separately a big saving since it is not necessary to buy entirely new respirators write for full information safety equipment corp johnson st brooklyn N Y 0 0 or YEARS THE BYRON JACKSON PUMP MFG CO los angeles visalia 9 ah S X cju PM d salt akl ph ix centrifugal PUMPS S EVERY S ERVICE |