BPT series metal ventilating fan is an ideal equipment for ventilation, it can effectively adjust air, expel muggy air, bring down wet, remove dust and exhaust smelly odor, perfectly keep the indoor air clean and fresh. Widely be used in houses, shopping mall, hotel, restaurant and other public places. High fire-proof: all-metal material design meets excellent fire-poof safety requirement Superior appearance: housing elaborated by quality cold-rolling steel with phosphating and plastic injection, bright color, excellent anti-rust&anti-corrosion, easy to clean. Panel adopted by superior quality steel plate, various styles. Spring hook automatically tighten panel, easy installation and maintenance High static pressure: superior ventilation fan performance and internal structure, ensure higher cabinet static pressure. Low noise: optimized centrifugal air wheel and fluid-channel scroll, key part adopts sound-absorbing design to greatly reduce the noise Superior quality motor: adopted by imported superior quality ball-bearing and over-heating protective device, lower noise and long lasting free maintenanceTechnical Parameters Model Air Volume M3/h Static Pressure Pa Power W Rated Voltage V Rated Frequency Hz Noise dB BPT10-11K 120 61 18 220 50 39 BPT10-22K 150 65 19 220 50 40 BPT15-22K 230 98 26 220 50 43 BPT15-33K 300 121 34 220 50 46 BPT15-43K 410 140 53 220 50 48 BPT15-44K 520 168 80 220 50 49 BPT15-54K 630 172 93 220 50 49 BPT20-54K 750 186 120 220 50 51 BPT20-54K1 900 189 156 220 50 53 BPT20-64K 1200 191 225 220 50 55