Used in all following air purifier models manufactured by Alpine, EcoQuest, Living Air, Vollara, Healthy Living, Spring Air, Lightning Air, Natures Air, Solair and Greentech Environmental:

• Fresh Air 
• Classic 
• Classic Plus
• XL-15 
• XL-15C 
• XL-15S 
• Breeze 
• Breeze AT 
• Breeze 2
• Flair 
• 880 
• Ozone Blaster 1
• Eagle 2500 
• Eagle 5000 
• Salon Air 
• GT3000
• PureAir 3000

Size: 4 1/2" x 4 1/2" 

Clean with water and brush. No soaps, no chemicals. Only ammonia may be used.