10-80ppi filter foam: 1. Rohs Compliant 2. UL flammability standard 3. 10ppi- ... -cut etc.Major Applications:For dust filtration or as a filter and lining in loudspeakers. Limited durability in direct sunlight. Filtration ... industry., Fuel tank foam, loud speaker foam, Air conditioner foam, Humidifier pads, Scrubbers, Face mask and Pads, Shoe Polish, Ink jet ...