HEPA FILTER, FILTER TYPE HEPA, PERFORMANCE RATING MERV 17, ACTUAL DEPTH 9/16 IN, ACTUAL HEIGHT 17 13/16 IN, ACTUAL WIDTH 13 3/8 IN, COMPATIBLE GRAINGER PART NUMBER 2HPB2, COMPATIBLE MANUFACTURER MODEL NUMBER 2HPB2, NUMBER OF FILTERS 1, NOMINAL DEPTH 1/2 IN., NOMINAL HEIGHT 14 IN., NOMINAL WIDTH 18 IN., FILTERS DOWN TO 0.3 MICRON, FILTERS OUT BACTERIA, VIRUSES, FILTER EFFICIENCY 99.97 PERCENT, FRAME MATERIAL PAPER, INCLUDES FRAME YES, NUMBER OF LA