Filters

Filters,
Filtration,
and Filter Beds

Filters are primarily used to remove particles from the air.

MERV Std 52.2	Average Dust Spot Efficiency Std 52.1	Average Arrestance Std 52.1	Particle Size Ranges	Typical Applications	Typical Filter Type
17-20¹	99.97² 99.99² 99.999²	N/A	< 0.30 µm	Clean Rooms High Risk Surgery Hazardous Materials	HEPA ULPA
13-16	80 - 95%+	> 98 to 99%	0.30 - 1.0 µm	Smoke Removal General Surgery Hospitals & Health Care Superior / Comm. Buildings	Rigid Cell / Cartridge Rigid Box Non-Supported / Bag
9-12	40 - 75%	> 95 to 98%	1.0 - 3.0 µm	Superior / Residential Better / Industrial Workplaces Better / Comm. Buildings	Non-Supported / Bag Rigid Box Rigid Cell / Cartridge
5-8	< 20 - 35%	80 to 95%	3.0 - 10.0 µm	Industrial Workplaces Commercial Better / Residential Paint Booth / Finishing	Pleated Filters Pocket Filters Cube Filters Media Panel Filters
1-4	< 20%	80 to 95%	> 10.0 µm	Residential / Minimum Light Commercial Minimum - Equipment Protection	Permanent / Self Charging (Passive) Washable / Metal, Foam / Synthetics Disposable Panels Fiberglass / Synthetics

Note: This table is intended to be a general guide to filter use and does not address specific applications or individual filter performance in a given application.
Refer to manufacturer test results for additional information. (1) Reserved for future classifications (2) DOP efficiency

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