The Honeywell 50000293-004 Post Filter is designed to fit the F50F and F300 Air Cleaners in the 20x12 1/2 and 20x25 sizes. Two filters are required for the 20x25 Air Cleaners. This filter is a high efficiency media type filter with a factory charge. It will improve the efficiency of the Air Cleaners without increasing pressure drop or decreasing airflow to the system.

• Description:               High Efficiency Media Post Filter
• Used With:                 F50F1065, F52F1048, F52F1055, F300E1035, F300A2012, F300B2012, F300A2025
• Not For Used With:    Older Style F50A and F50E Air Cleaners

Notes:     It is recommended that these filters be changed every 6 months

               These filters should not be washed as it will destroy the factory charge.

This item must be ordered in multiples of 2, eg. 2,4,6,8,10