The filtering boxes (old and new modifications)

Filters are issued three dimensions:
Small - F1 - 5M, FC - 5M, FG - to the 5th, FC - the 5th
Average - FG - 5C, FC — 5C
Big - FG - 5B, FC - 5B
Filters are issued the following brands and classes:
Antigas - A2, A3, V2, VZ, E2, EZ, K2, KZ
Combined - A2RZ, V2RZ, E2RZ, K2RZ, AZRZ, VZRZ, EZRZ, KZRZ
Antigas filters can be used:
Brands A - for protection against organic gases and vapors of solvents with a temperature of boiling over 65 °C (gasoline, kerosene, acetone, benzene and its analogs, alcohols, air, vapors of chlorine and fosfororganichesky substances)
Brands B - for protection against inorganic gases and vapors, except for carbon oxide (chlorine, fluorine, bromine, hydrogen sulfide, carbon sulfur, chlorcyanogen, halogens)
Brand E - for protection against dioxide of sulfur and other sour gases and vapors (sulphurous gas, hydrogen sulfide, chlorine and fosfororganichesky substances, vapors of acetic and ant acids)
Brands K - for protection against ammonia and its organic derivatives.
All combined filters are supplied with the antiaerosol filter and protect from various aerosols (dust, a smoke, fog)