Optimize your mushroom cultivation process with our adhesive filter discs, designed specifically for maintaining a clean environment. These filter discs are essential for allowing gas exchange while preventing impurities from entering your growing containers. Ideal for creating a healthy and productive cultivation environment. Features -Color:White -Material:Eptfe -Size:2.30X2.30X0.10cm/0.90X0.90X0.04in(single filter disc) - Effective filtration: The filter discs feature technology, allowing for efficient gas exchange while blocking impurities for optimal mushroom growth - Adhesive backing: Each filter patch comes with a strong adhesive backing, making it easy to attach to various types of containers, such as jars, bags, and tubs - Dependable and lasting: These mycology filter stickers are designed to withstand the conditions of mushroom cultivation, including humidity and temperature - Versatile use: Suitable for a wide range of mushroom species and cultivation methods, these filter discs are a versatile addition to your mycology kit - Easy to use: Simply peel off the backing and apply the disc to the desired location on your container, offering users a quick and effortless application process Package list: 1 x sheet of filter discs