This Half face respirator is made by Dentec and is a size S/M. Its model is the ComfortAir it costs about USD25. It has a Med/High nose bridge height, and its facepiece is made of Silicone. The width min and max distances, in inches, curving from mid cheek to mid cheek are 2.25 and 4.25 respectively. The distance in inches, straight up and down in the middle along the nose line is a minimum of 2.75 and a maximum of 4.75. The average depth of the mask is 1.625 inches. You can find more information about this mask at https://dentecsafety.com/usa/product/comfort-air-series-400-half-mask-elastomeric-rubber-with-diskit-p100ov-filters/. This mask weighs about 120 grams.