64-Pack Synthetic Filter Paper Stickers For Mushroom Growing - 20mm 0.25um Filter Discs

Calling all mushroom growers! These little filter stickers are total game-changers for your cultivation setup. Each pack comes with 64 synthetic filter paper discs that fit perfectly over holes in wide mouth jar lids. They're made from high-quality PTFE material that can handle heat up to 255°F, plus they're waterproof yet still breathable - exactly what your mushrooms need for proper air exchange without letting contaminants in. The application couldn't be simpler: just peel off the backing and stick them onto clean, dry lid surfaces. They create the perfect environment for your mushrooms to thrive by allowing fresh air circulation while filtering out particles as small as 0.25 micrometers. Whether you're a commercial grower or just starting your mushroom journey at home, these reusable filters work great with mason jars, steam sterilizers, autoclaves, and pressure cookers. No more fussing with messy polyfill or dealing with contamination issues - these professional-grade filters make mushroom cultivation so much easier and more reliable!