Filter cloths in nylon, polypropylene, polyester... -
Amazon.com: 40" Wide by The Yard Spunbond Breathable Anti Splash Resistant Non-Fusible Nonwoven Interfacing 60g/m², Non-Woven Fabric, Width 100cm, Polypropylene 100% Air Filter Made in Korea (1 Yard)
Merv 16 Polypropylene Material (30 Square Feet) for DIY Air Filtration Projects, Electrostatic Filter Material 99% Efficient at 0.3 um, Non-woven Fabric 24” x 180” Cut to Any Size - - Amazon.com