Mushroom Cultivation Grain Spawn Grow Bags 3Mil Poly .2 micron

3T Grain Spawn bag that can hold approximately up to 5 lbs of a grain spawn.

These 3.0 mil thick bags also have a 2”X 3” filter that is .2 micron size. The 3T is ideal for large grain spawn blocks from 5 lbs in size. These bags are the best going for your spawning stage. These bags are the industry leader for a reason. All of our bags are Polypropylene which means they are autoclavable.