Combi filter SR 599 A1BE2K1 HG P3 R that protects against organic compounds with a boiling point above +65°C, inorganic and acid gases/vapours, ammonia, mercury vapour and all types of particles. Warning! Maximum usage time for protection against mercury fumes is 50 hours. Fits on Sundström SR 500 and SR 500 EX fan systems. Carton: 10 pcs.