Honeywell 50000293-004 20 x 12 1/2 Post Filter - 2 Filter Pack

The Honeywell 50000293-004 is a replacement post filter for specific Honeywell whole-house electronic air cleaners, enhancing their efficiency without significantly affecting pressure drop. Two filters are needed for certain models.

• The description claims the post filter boosts the efficiency of electronic air cleaners with negligible effect on pressure drop.
• The description claims regular replacement every six months maximizes efficiency.
• The description claims washing the filter will neutralize its charge.