Htf(a) series fire axial fan is suitable for ventilation and fire control of tall building, subway tunnel, underground stores, gymnasia, etc, this fan sets with double-speed motor, it operates at a low speed normally and auomaticly turn to high speed when fire larms to dicharge the smoke. The air are not allow contain any adhensive materail, dust and grain. Concentration shall not more than 150mg/m3 when temperature not higher than 80degree c. The fan can running 30mins when tempeature of smoke is increase to 280degree c.. Model no.: htf(a)-i-6. Electric current type: ac. Certification: ce, sgs, ccc. Power: 5.5kw. Voltage: 220/380/415/440/460v. Noise: =70db. Specification: ce, gb. Hs code: 84195000. Blade material: steel. Mounting: wall fan. Air flow: 16090m³/h. Speed: 2900r/m. Pressure: 510pa. Trademark: lkz.