... 5.5KW double-intake centrifugal fan for exhaust air, model YDW4.5S, air capacity: 16000m3/h, with manual damper ... electronic ballasts,5.0mm clear tempered glass;Generator SettingExhaust air from rear side; galvanized steel molding frame, white ... Heating Productivity100000Illumination: (Lux)≥800Efficiency of Air Filtration:≥95%Noise: dB(A)<80Total Power: (KW)12.2 Air Filter Efficiency: >95%Noise: ...