TR-6820E 3M Versaflo Particulate Filter + Nuisance Odour Filter. Our Filter is designed to be used with 3M Versaflo Powered Air Turbo TR-600 and TR-800 Series. Provides protection against particulate, nuisance level organic vapour and acid gas and up to 10 xTLV hydrogen fluoride, Lighter weight makes it preferable for some smelting operations, Suitable for operations where nuisance odours are present alongside particulate hazards, Simple to install, 3M recommends using Filter Cover TR-6800FC to help protect this Filter from physical damage, CE approved.