bosch humidifier evaporator pad W3-0840_diameter_14-1/2 The filtering material of the

The filtering material of the Air-T-Rex is thermally fused around a galvanized wire ring

It filters airborne allergens including dust

System Friendly Pressure Drop — The EZ Flex™ filter protects HVAC systems by not producing significant pressure drop

Large Dust Holding Capacity — The EZ Flex™ has a high dust holding capacity

Offers low static pressure drop and better airflow

bosch humidifier evaporator pad W3-0840_diameter_14-1/2 The filtering material of theHumidifier pad made of expanded aluminum. The pad is coated with a hydrophilic material that absorbs and holds water flowing through the pad, allowing warm air flowing across the pad to evaporate the water and humidify the air. Lifespan: 1 year (less with hard water)