Honeywell 24000 99.97% HEPA media filter for F113A6001. Removes particles as small as 0.3 microns from the air that passes through the filter.Inside the 24000 box is one hepa filter measuring 10-1/4" H X 9-/14" ID X 14-1/2" OD. Also fits models 13350 13500 13501 13502 13503 13520 13523 13525 13526 13528 13350 50250 50251 52500 63500 83162 83259 8328 83332 EV-35B.