Farmhouse-window "sunflower quilting" to stable-fence "oatmeal gingham": Rustic bags thrive at farmers’ markets and meadow picnics.
Farmhouse-window "sunflower quilting" to stable-fence "oatmeal gingham": Rustic bags thrive at farmers’ markets and meadow picnics. Farmhouse-window "sunflower quilting" to stable-fence "oatmeal gingham": Rustic bags thrive at farmers’ markets and meadow picnics.
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4T Injection Port OxoD Mushroom Grow Bag Extra Small Polypropylene 4” x 3” x 18” 0.2 Micron Filter Biodegradable (10)

4T Injection Port OxoD Mushroom Grow Bag Extra Small Polypropylene 4” x 3” x 18” 0.2 Micron Filter Biodegradable (10)

$ 20.00

$ 20.00

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Product Details

  • Self-healing injection port enables sterile introduction of cultures and spore solutions.
  • 90% efficient 0.2 micron filter for high gas exchanges and complete contaminant filtration.
  • Autoclavable - Withstands high temperature and pressure for steam sterilization up to 120c.
  • Gusseted for strength and easy filling.
  • Gusseted for strength and easy filling.


The Unicorn Bags 4T OxoD is a top-quality polypropylene bag designed for growing gourmet mushrooms such as oyster, lion's mane, and enoki. Made with a 0.2 micron, high surface area type T filter, this bag is engineered to enable proper gas exchange and humidity control while keeping out even the smallest contaminants. This makes it ideal for spawn production and growing sensitive mushroom varieties.

The self-healing injection port allows sterile introduction of liquid culture or spore solutions without opening or resealing the bag. The port closes automatically after each use, preventing contamination and maintaining a sterile environment for your mycelium to grow.

Type: Gusseted

Material: 3.0 Mil Polypropylene with OxoD Technology

Bag Size: 4″ X 3″ X 18″

Filter Type: T

Filter Size: 1.5″X1.5″

Filter Pore Size: 0.2 microns

Filter Hole: Style L



  • Product Dimensions ‏ : ‎ 3 x 4 x 18 inches; 6.17 ounces
  • Date First Available ‏ : ‎ February 9, 2024
  • Manufacturer ‏ : ‎ Unicorn Bags LLC
  • Country of Origin ‏ : ‎ USA

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Farmhouse-window "sunflower quilting" to stable-fence "oatmeal gingham": Rustic bags thrive at farmers’ markets and meadow picnics.
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