Adherable Monotub Filters 3.5"

These 3.5" filters can be applied to your fruiting chamber to give your substrate fresh air while maintaining high humidity levels. These can be used on holes up to 3" large

• High airflow filters
  
• Proprietary material that maintains constant humidity levels
  
• Manufactured with strong 3M adhesive
  
• Time-saving lightning fast application VS polyfil

Now available in 3 sizes! 

• 1.5" Great for holes up to 1"
• 2.5" Great for holes up to 2" (Original)
• 3.5" Great for holes up to 3"