Original Microppose Tub Filters from the USA (2 inch)
These filters can be applied to your fruiting chamber to give your substrate fresh air while maintaining high levels of humidity. These filters are slightly larger than your 2" tub hole and are designed to cover over them sufficiently.
 
- High airflow filters
- Maintains constant humidity levels
- Made from 100% recycled filter material
- Manufactured with strong 3M adhesive
- Time saving lightening fast application VS polyfil