The Honeywell model 32006027-001 is the original manufacturerâ€™s 24 x 12 x 2 replacement pre-filter for the Honeywell model F500 whole house HEPA Air Cleaner. The size of the 32006027-001 pre-filter is approximately 23 1/2" x 11 1/2" x 1 3/4" and has a rating of MERV 8. The High-efficiency pleated pre-filter extends the HEPA filter life.
Honeywell recommends the replacement of the pre-filter every 12 months under normal use. Regular replacement of the pre-filter will maximize the efficiency of your Whole House HEPA Air Cleaner.