Respirator mask sizing guide

摘要

The present invention provides a sizing guide for assisting in the initial determination of an appropriate size of respirator mask for a user thereof. The sizing guide has at least a first sizing gap having a known width such that comparison of the width of the first sizing gap with the length between a pair of facial landmarks such as the sellion landmark and the menton landmark provides an initial determination of the appropriate size respirator mask for the user which can then be fit tested. Preferably, the sizing guide also has a second sizing gap having a known width different from the width of the first sizing gap.