Microppose Monotub Filters 2.5" (for 2" holes) - Pack of 6

These 2.5" filters can be applied to your fruiting chamber to give your substrate fresh air while maintaining high humidity levels. These filters are slightly larger than your 2" tub hole and are designed to cover over them sufficiently. 

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