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These are Unicorn brand 14-A filter patch bags to be used for spawn or production.
Due to the 14A having a 0.5 micron filter patch, the 3T bag would be the best choice for spawn purposes.
The 3T bag has a 0.2 micron high efficiency filter.
Filters are rated for up to 5 - 7 pounds.
Polypropylene [PP] Bags
Gusseted, 2.2 Mil Thickness
Bag Size : 8" x 5" x 19"
Filter Type : A
Filter Size : 1.5" x 1.5"
Filter Micron : 0.5