2-in-1 water filter for humidifier nebulizer

Lasts 5x longer than conventional water filters

Saves money - enough for the whole season

For all ultrasonic devices except U7131, U7136, U7137 and U7138

1. Considerable reduction in water hardness
2. The activated carbon it contains absorbs impurities and removes odors from the water
3. Extremely economical - lasts up to 6 months
4. Contains water test strips to determine the service life of the A250 AQUA PRO