Paper Frame Panel Primary Efficiency Filter

Paper Frame Panel Primary Efficiency Filter. High Dust Holding Capacity: High-quality synthetic fiber media ensures high dust holding capacity and low resistance. Durable Paper Frame: Sturdy double-layer moisture-proof paper frame structure for enhanced durability. Wide Application Range: Suitable for various occasions with a wide applicable air velocity range. Versatile Usage Scenarios: Ideal for AC return air, fresh air inlets, office ventilation, and pre-filtration. G4/M5 Efficiency Grade: Meets EN779 Standard with G4 and M5 efficiency grades for primary filtration.