Cambridge Filter AP-9-56C Medium-High Performance Air Filter This is the Cambridge Filter medium-high performance air filter, AP-9-56C. It is an unused item. The original box is damaged. There is no apparent damage to the main unit. This product is sold for around 150,000 yen for similar items. ● Description: Model: AP‑9‑56C Test Standard: JIS B 9908 : 2011 Form 2 Filter Media: Glass fiber (with galvanized steel mesh) Separator: ABS resin (plastic) Outer Frame: Galvanized steel sheet Sealant: Urethane resin Gasket: Polyethylene sponge (variation in notation) Continuous Maximum Temperature: 43 °C Instantaneous Maximum Temperature: 60 °C Instantaneous Maximum Humidity: 100% RH (no condensation) Rated Airflow: 56 m³/min Initial Pressure Drop: ≤ 137 Pa Final Pressure Drop: 343 Pa External Dimensions (H × W × D): 610 × 610 × 292 mm Number of Pockets: 8 Collection Efficiency (0.4 µm): ≥ 80% Collection Efficiency (0.7 µm): ≥ 90% Weight: Approximately 10 kg Applications/Features: Excellent for removing dust and pollen from the atmosphere, and features a lifespan 1.5 to 2 times longer than standard separator types. Collection Performance: It has a collection efficiency of 80% or more for 0.4 µm particles and 90% or more for 0.7 µm particles, providing sufficient performance as a general medium-high performance filter. Materials: Durable and strong construction, combining glass fiber, metal mesh, and a robust outer frame. Operating Environment Restrictions: Performance is limited in high-temperature and high-humidity environments, so selection is necessary depending on the conditions.