Square chuck air filter cartridge, Widely used in the field of electron, tyre, rubber, and battery Square Chuck Air Filter Cartridge Features of standard constructionCellulose/polyesterPerformance description1. Wider pleat width design2. High filtration efficiency3. Top open, bottom close4. Galvanized stainless metal configuration5. Rubber sealMaterial Cellulose, cellulose+flame retardant, ...