North® CFR-1 4200 N95 Respirator is the latest design for particulate respirators, unique and user friendly. North CFR-1 face mask comes with a North N95 filter standard with each mask. Get a proper seal every time with the North CFR-1. Similar to an APR half mask the user simply adjusts the head cradle and neck strap for a comfortable fit. Replaceable filters are packed 20 per box and sold separately.