... -corrosive gases warehouseFeatures1.Soft, Lightweight, comfortable, odorless.2.Form fitting design, Fiberglass free, latex free earloops.3.No-irritating to skin, permits ... air passage4.Breathable, Low-linting, latex free, fiberglass free, light weight, Comfortable SizeWidth across face175mm+/-5mmDepth pleated90mm+/-5mmMetal ...