Pre-Filter, Filter Type Blanket, Actual Depth 1/2 in, Actual Height 39 in, Actual Width 30 in, Compatible Grainger Part Number 45J421, Compatible Manufacturer Model Number 64207, Number of Filters 1, Media Material Not Applicable, Filter Layer Type Blanket, Nominal Depth Not Applicable, Nominal Height Not Applicable, Nominal Width Not Applicable, Filters Down To 5 micron, Filter Efficiency Not Applicable, Air Flow @ 300 fpm Not Applicable, Frame Material Not Applicable, Includes Not Applicable. This item has been restricted from sale in the following state (s): []