Specifications: Size: 82 mm in diameter Color: white Membrane material:Hydrophobic PTFE Pore size:0.3um Package includes: 3 x6sheets Synthetic filter discs Features: Waterproof ,breathable,high temperture and press resistance,reuseable. 18pcs filter sticker Included ,Great for the for all mushroom growers looking to provide a growing environment with proper air exchange. These filter vent work great for a variety of growing techniques including BRF Jars, Liquid Culture, Spawn Cultivation and may more. Safe for Pressure Cooking.
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