• 5 pieces of Pre-filter
• 1 piece Medium-efficiency glass fiber filter
  
• 2 piece Activated carbon filters

 Product Consumption (calculated according to 8 hours every day)

1st Layer: 

Fire-proof protection net

Replacement period: Washable.

2nd Layer: 

Primary efficiency filtration cotton

Replacement period: 1-2 week

3rd Layer: 

Medium-efficiency filtration cotton

Replacement period: 1-2 month

3-4th Layer:

High-efficiency filtration cotton: 

Replacement period: 3-4 months

We can configure different filter element as you need.