top of page

200 Small size "master" grain spawn bags. These bags are great to start master grain spawn and elimnate the time consuming process of cleaning jars. If you have one contaminate, toss it out and you dont have to risk opening a jar full of mold or bacteria and spreading it all over your lab or grow area. They hold about twice the amount of a normal quart mason jar or about 2 lbs of hydrated gran.



Type: Gussetted

Material: 3.0 Mil Polypropylene

Bag Size: 4″ X 3″ X 18″

Filter Type: T

Filter Size: 1.5″X1.5″

Filter Pore Size: .2 microns

Filter Hole: Style L


Proudly made in the U.S.A!


Free shipping in US. Contact me for additional shipping quotes on larger amounts.


This bag is identical to bag Type 4-A and bag Type 4-B except that it has a Type T filter.

This side-gusseted breathable bag