The MinusA2's pre-filter gets the first swing at allergens and pollutants before the other filters finish the job. The pre-filter effectively traps and reduce large sized allergens, pet hair, and dust. This filter does not need to be replaced and can be washed for reuse.

• Environment friendly and non toxic
• Harmless to human body
• Multi-functions such as deodorization.
• Excellent lasting effects
• Excellent cleaning capability by trapping large size particles and dust