This Half face respirator is made by Honeywell and is a size Medium. Its model is the 7700 and it costs about USD35. It has a Med/High nose bridge height, and its facepiece is made of Silicone - latex free. The width min and max distances, in inches, curving from mid cheek to mid cheek are 3 and 4.5 respectively. The distance in inches, straight up and down in the middle along the nose line is a minimum of 3 and a maximum of 4.75. The average depth of the mask is 1.85 inches. You can find more information about this mask at https://sps.honeywell.com/us/en/products/safety/respiratory-protection/air-purifying-respirator-apr/7700-series-half-mask. This mask weighs about 128 grams.