Drawstring Ease, Wide Opening Grace: Hobo Bucket Bag for Wanderers & Doers.
Drawstring Ease, Wide Opening Grace: Hobo Bucket Bag for Wanderers & Doers. Drawstring Ease, Wide Opening Grace: Hobo Bucket Bag for Wanderers & Doers.
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4B Injection Port OxoD Mushroom Grow Bag Extra Small Polypropylene 4” x 3” x 18” 5 Micron Filter Biodegradable (20)

4B Injection Port OxoD Mushroom Grow Bag Extra Small Polypropylene 4” x 3” x 18” 5 Micron Filter Biodegradable (20)

$ 29.00

$ 29.00

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Product Details

  • Self-healing injection port enables sterile introduction of cultures and spore solutions.
  • 5 Micron filter with 90% surface area available enables fast gas and allows sterilization of pre-sealed bags.
  • 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 4B OxoD is a top-quality polypropylene bag designed for growing gourmet mushrooms such as oyster, lion's mane, and enoki. Made with a 5 micron, high surface area type B filter, this bag is engineered to enable high gas exchange and humidity control while keeping out contaminants. The larger pore size allows for sealing this bag before autoclaving without damaging the filter or seals. This bag is ideal for producing fruiting blocks very quickly and consistently.

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: B

Filter Size: 1.5″X1.5″

Filter Pore Size: 5 microns

Filter Hole: Style L



  • Package Dimensions ‏ : ‎ 10.25 x 6.25 x 1.25 inches; 11.2 ounces
  • Date First Available ‏ : ‎ February 9, 2024
  • Manufacturer ‏ : ‎ Unicorn Bags LLC
  • Country of Origin ‏ : ‎ USA

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