• 5 pieces of Pre-filter,
• 1 piece Medium-efficiency PP filter element
• 1 piece Medium-efficiency glass fiber filter
  
• 1 piece Activated carbon filter

 Product Consumption (calculated according to 8 hours everyday)

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: 2-3 month

4-5th Layer:

High efficiency filtration cotton: 

Replacement period: 3-6 month

We can configure different filter element as you need.