These filters can be applied to your fruiting chamber for mushroom growing (mycology) 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.
- 12 pack
- Free USA shipping
- High airflow filters
- Maintains constant humidity levels
- Made from 100% recycled filter material
- Manufactured with strong 3M adhesive
- Time-saving lightning fast application VS polyfil
While many of our products have free shipping, the shipping costs for heavier items are calculated by weight and distance. Please consider the labor and resources required for shipping and understand that we cannot provide free shipping on some items. We offer a local pickup option at our warehouse in Northern California near Sacramento.