Is it Model#00817682? MSA Safety Works Toxic Respirator for Harmful dust with ExhalationValve .I keep one in my tool bag and PSK Bag.For people wearing eyeglass's It's a must! No Fogging! On 9-ll my nefhew and his entire company of NYPD recruit's were sent from the Acd.to the site.I saw his wife and gave her a box of these and Vick's vapor rub for him to pass around to his men