
HEPA H14 FFU Fan Filter Unit for Cleanroom Ceiling ISO 5. Long Service Life Fan: Germany EBM direct-drive centrifugal fan with over 50,000 hours service life. Low Noise Operation: Noise level ranges from 48 to 56 dBA for quiet cleanroom environments. Customizable Dimensions: Available in 575x575, 575x1175, and 1175x1175 mm sizes with variable heights. Multiple Shell Materials: Housing options include stainless steel, aluminum alloy, and cold-rolled steel. Infinitely Variable Speed: Fan speed regulation allows precise control of wind speed between 0.3-0.5 m/s. Strict Quality Inspection: Each unit tested with dust particle counter per U.S. Federal Standard 209E. Wide Certification Coverage: Certified with RoHS, CE, ISO9001, and 3c standards for global compliance.