Applications

ASHRAE 52.2 MINIMUM EFFICIENCY REPORTING VALUE (MERV)	APPROXIMATE AS1324 or ASHRAE. 52.1 RESULTS		APPROXIMATE AS1324 FILTER PERFORMANCE RATING	APPLICATION GUIDELINES
	NO. 1 or DUST SPOT EFFICIENCY	NO. 4 or ARRESTANCE		TYPICAL CONTROLLED CONTAMINANT	TYPICAL APPLICATION and LIMITATIONS
20 19 18 17	N/A N/A N/A N/A	N/A N/A N/A N/A	U15 H14 H13 H12	< 0.30 um Particle Size Virus (unattached) Carbon Dust Sea Salt All Combustion Smoke Radon Progeny	Cleanrooms Radioactive Materials Pharmaceutica Manufacturing Carcinogenic Materials Orthopaedic Surgery
TYPICAL FILTERS FOR MERV 17 TO 20

H13,H14,U15,U16: Duct Mounted			H13.H14,U15,U16: Terminal Mounted
		H13 / H14 / U15 / U16

ASHRAE 52.2 MINIMUM EFFICIENCY REPORTING VALUE (MERV)	APPROXIMATE AS1324 or ASHRAE. 52.1 RESULTS		APPROXIMATE AS1324 FILTER PERFORMANCE RATING	APPLICATION GUIDELINES
	NO. 1 or DUST SPOT EFFICIENCY	NO. 4 or ARRESTANCE		TYPICAL CONTROLLED CONTAMINANT	TYPICAL APPLICATION and LIMITATIONS
16 15 14 13	N/A >95% 90-95% 80-90%	N/A N/A >98% >98%	H10 F9 F8 F7	0.30 - 1.0 um Particle Size All Bacteria Most Tobacco Smoke Droplet Nuclei (sneeze) Cooking Oil Most Smoke Insecticide Dust Copier Toner Most Face Powder Most Paint Pigments	Hospital Inpatient Care General Surgery Smoking Lounges Superior Commercial Buildings
TYPICAL FILTERS FOR MERV 13 TO 16

H10:Opakfil 95-DOP F8:Opakfil F7:Opakfil		F8:Riga Flo F7:Riga Flo		F8,F7:S-Flo F8,F7:Hi Flo

ASHRAE 52.2 MINIMUM EFFICIENCY REPORTING VALUE (MERV)	APPROXIMATE AS1324 or ASHRAE. 52.1 RESULTS		APPROXIMATE AS1324 FILTER PERFORMANCE RATING	APPLICATION GUIDELINES
	NO. 1 or DUST SPOT EFFICIENCY	NO. 4 or ARRESTANCE		TYPICAL CONTROLLED CONTAMINANT	TYPICAL APPLICATION and LIMITATIONS
12 11 10 9	70-75% 60-65% 50-55% 40-45%	>95% >95% >95% >90%	F6 F6 F5 F5	1.0 - 3.0 um Particle Size Legionella Humidifier Dust Lead Dust Milled Flour Coal Dust Auto Emissions Nebulizer Drops Welding Fumes	Superior Residential Better Commerical Buildings Hospital Laboratories
TYPICAL FILTERS FOR MERV 9 TO 12

F6,F5:S-Flo F6,F5:Hi-Flo		MERV 11:Ap-Eleven

ASHRAE 52.2 MINIMUM EFFICIENCY REPORTING VALUE (MERV)	APPROXIMATE AS1324 or ASHRAE. 52.1 RESULTS		APPROXIMATE AS1324 FILTER PERFORMANCE RATING	APPLICATION GUIDELINES
	NO. 1 or DUST SPOT EFFICIENCY	NO. 4 or ARRESTANCE		TYPICAL CONTROLLED CONTAMINANT	TYPICAL APPLICATION and LIMITATIONS
8 7 6 5	30-35% 25-30% <20% <20%	>90% >90% 85-90% 80-85%	F4/G4 F4/G4 G3 G3	3.0 - 10.0 um Particle Size Mold Spores Hair Spray Fabric Protector Dusting Aids Cement Dust Pudding Mix Snuff Powdered Milk	Commercial Buildings Better Residential Industrial Workplaces Paint Booth Inlet Air
TYPICAL FILTERS FOR MERV 5 TO 8

F4:30/30 F4:SP30/30		Pad Frame with F4:SL100 Pad F4:SL200 Pad G3:Grade 4 Pad

ASHRAE 52.2 MINIMUM EFFICIENCY REPORTING VALUE (MERV)	APPROXIMATE AS1324 or ASHRAE. 52.1 RESULTS		APPROXIMATE AS1324 FILTER PERFORMANCE RATING	APPLICATION GUIDELINES
	NO. 1 or DUST SPOT EFFICIENCY	NO. 4 or ARRESTANCE		TYPICAL CONTROLLED CONTAMINANT	TYPICAL APPLICATION and LIMITATIONS
4 3 2 1	<20% <20% <20% <20%	75-80% 70-75% 65-70% <65%	G2 G2 G2 G1	>10.0 um Particle Size Pollen Spanish Moss Dust Mites Sanding Dust Spray Paint Dust Textile Fibers Carpet Fibers	Minimum Filtration Residential Window Air Conditioners
TYPICAL FILTERS FOR MERV 1 TO 4

Cleanable Electrostatic Panel G1:One Layer G2:Two Layer		Washable Panel P11-103

Notes
1) A MERV for other than HEPA/ULPA filters also includes a test airflow rate, but is not shown here because it has no significance for the purposes of this table. Extract from Table E1, ASHRAE 52.2
2) Filters with a rating of F7 and above, should be pre-filtered with atleast a F4 filter.

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