Crafted with advanced ePTFE material, these breathable filter membranes are designed to ensure optimal air exchange while reducing contamination during mushroom cultivation. Their sturdy and flexible structure makes them ideal for use in grow bags, jars, and monotubs, supporting healthy growth in controlled environment. Features -Color:Multi -Material:Eptfe -Size:1.00X1.00X0.50cm/0.39X0.39X0.20in -High efficiency filtration: Mushroom Filter Discs, ensuring a sterile cultivation environment for optimal mushroom growth and reduced contamination risks -Advanced micropore design: Monotubs Filters, features precision engineered micropores that provide excellent breathability while maintaining a secure barrier against contaminants -Enhanced oxygen supply: Mushroom Jar Filters, promotes healthy mushroom development by facilitating consistent oxygen flow, ideal for large scale cultivation setups -Convenient bulk packaging: designed to meet the demands of extensive mushroom farming -Easy installation and maintenance: simplifies the cultivation process with user-friendly application and simple replacement, boosting overall productivity Package list: 2 x sheets of Cultivation Filter Stickers (150pcs/Sheet)