PYHL-14A series fire-rated mixed flow fan designed for smoke exhaust and dual-purpose ventilation in buildings. Combines high airflow with high pressure in a compact footprint. Key features: fire-rated construction for smoke exhaust, high efficiency low-noise mixed flow design, dual-purpose normal and emergency ventilation, compact structure. Specifications: airflow 2,400~140,000 m3/h; pressure 100~2,800 Pa; motor power 0.18~110 kW. Applications: smoke exhaust systems, tunnels, basements, commercial buildings. Certifications: CCC, CE, ISO 9001. MOQ 1 unit, lead time 15-30 working days, warranty 18 months, OEM/ODM available.