The 3M Versaflo TR-6530N Organic Vapor Acid Gas HEPA Filter is a high-quality replacement filter designed for use in various masks and respirators. This filter, with a filter class of OV, effectively captures organic vapors and acid gases, providing a safe and comfortable environment for users. With the trusted 3M brand and specific model number TR-6530N, this filter is a reliable and efficient choice for personal protective equipment in various industrial settings. Brand new and unopened.