Honeywell 21500 replacement filter for the Enviracaire model F112A6003, F115C1005, 51500, 61500, 11500, EV-15, 11502, 18150, 18159, 11520, 11525, 11526, 17200, 17201, 17210.
Also know as 32000206-001, inside the 21500 box is one hepa filter measuring 14-3/8 OD, 9-1/4 ID, 6" H.. Disposable CPZ cannister filter can NOT be used with this filter as the inner diameter is not big enough.
This True HEPA filter lasts 1-3 years depending on conditions such as operating speed and duration. Replaces filter 26500. Genuine Honeywell, as shown in photo.