4B Unicorn Mushroom Bag Type for Fruiting Substrate

Type: Gussetted

Material: 3.0 Mil Polypropylene

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 

This bag  is identical to bag Type 4B-Inj except that it has no injection port.

This side-gusseted breathable bag gives a sturdy stand-up bag after filling and a strong bottom seal. We manufacture it with equipment we designed and with proprietary additives, Unicorn Bags are pliable at any temperature as well as after sterilization. The bag opening is designed for easy sealing and the bag’s bottom seal can withstand agitation.