Filter Grades, Types and Their Applications (Overview)

Filter Grade	EU Grade	Efficiency/Arrestance	Filter Types	Typical Applications	MERV Rating
G3	EU3	80-90% Arrestance	Panel Filters	Medium level pre-filtration. Simple ventilation for garages & factories.	MERV 5
G4	EU4	90% Arrestance	Pleated Panel Filters,	Higher level pre-filtration. Air-conditioning of paint booths & kitchens.	MERV 6-8
			Bag Filters
M5 (F5)	EU5	40-60% Efficiency	Bag Filters	Air-conditioning of restaurants, gyms, shops & workshops.	MERV 8-10
M6 (F6)	EU6	60-80% Efficiency
F7	EU7	80-90% Efficiency	Bag Filters,	Air-conditioning of schools, offices, theatres, computer rooms & spray booths.	MERV 13-14
			Pleat Pack Filters
F8	EU8	90-95% Efficiency	Bag Filters,	Air-conditioning of clean rooms, pharmaceutical, animal health & laboratories.	MERV 14-15
F9	EU9	95% Efficiency	Pleat Pack Filters
H10	EU10	> 95% Efficiency @ 0.3 µm	HEPA Filters	Highly effective against bacteria & smokes. Used in operating theatres, pill production, electronics & sterilization applications.	MERV 16
H13	EU13	> 99.997% Efficiency @ 0.3 µm	HEPA Filters	Highest air quality applications. Used in sterile areas, class 1000 clean rooms, bacteriological, animal health & isolation.	-