Product description: 1. humidified air; upkeep screen, when there could also be scale, citric acid answer soak in bloodless water, then rinse. 2. odor, use baking soda dissolved in bloodless water soak, then rinse. -colour: Blue/orange(Random delivery) -size 228*120*28mm Compatible with: AC4084, AC4085, AC4086 well matched with: 1pc filter