Honeywell F300E1027 Electronic Air Cleaner, 20" x 20" with Performance Enhancing Post-Filter

F300 optimizes efficiency with airflow capturing up to 98 percent of particles that pass through it. It operates with all gas, oil and electric forced warm air furnaces and AC systems, and is available in four sizes to fit most ducts.

• Media post-filter provides enhanced filtration on select models
• Solid state power supply is self-regulating and maintains peak efficiency during a wide range of cell dirt loading conditions
• Low-profile door with test button to check system operation
• Helps filter efficiency-robbing "gunk" before it coats critical system parts
• Very low pressure drop