Adhesive filter discs are an important component in mushroom cultivation, providing a clean, breathable barrier that supports healthy growth. Their micro-porous material, self-adhesive backing, versatility, and durability make them an indispensable tool for both hobbyists and commercial . Features -Color:White -Material:Eptfe -Size:2.30X2.30X0.10cm/0.90X0.90X0.04in(single filter disc) - Breathable filtration: Made from micro-porous materials, these filter patches allow for exchange of gases while effectively filtering out dirt - Easy application: The adhesive backing allows for easy application to the surface of grow bags, jars, or other containers without the need for additional - Secure seal: The strong adhesive provides a secure seal, preventing any gaps, reducing the risk of impurities during the cultivation process - Wide compatibility: These filter discs can be used for a variety of mushroom species, and they can be easily if needed, providing flexibility for different setups - Durability and longevity: These filter stickers can withstand the cultivation cycle, from inoculation to fruiting, without degrading or losing effectiveness Package list: 1 x sheet of filter discs