Operating features: 1: it is manufactured for the most demanding clean room applications, offering a combination of value, high quality construction. 2: led control board with ce remark, low operating noise levels, and a wide product range to suit all budgets from the industry leader. 3: stainless steel or antimicrobial coating on all painted surfaces minimizes contamination. Long ¨clife hepa filter for supply air flow. 4: available in single and double. 5: american deyer pressure remind of you replace the hepa filter in regular. Model Kel-vcb-1Kel -vcb-2Kel -vcb-3 External size (mm) (wxdxh) 1000x700x18001200x700x18001500x700x1800 Work zone (mm) (wxdxh) 900x650x6001100x650x6001400 x650x600 Purification rank Fs209e 100rank Rating airflow(m3/h) 1200m3/h1800m3/h2300m3/h Filtration efficiency More than 99.99%@0.3um h13-h14 Average wind speed 0.3-0.6m/s Intensity of illumination >300lx Pressure gaugeAmerica dwyer pressure watch 1 pcs Uv light1 pcs Fluorescent lamp20wx130wx140wx1 Material (option)1£ºentirety sus304. 2£ºentirety sus201. 3: external is steel with power coated, internal is sus304 4: external is steel with power coated. Internal is sus301 Control board1: control the air speed up/down 2: power off /on 3: working time display 4: working area light on/off 5: alarm indicator. 6: differential pressure gauge. Power 280w405w490w Noise