BPH 1000 WHEEL PERFORMANCE CURVE power [kW] efficiencies in % speed [1/min] sound power level A-weighted Lwa6 volume flow rate V [m³/h] FAN SIZE "K" factor correction for spectrum noise of BPH Octave band (Hz) 63 125 250 500 1K 2K 4K 8K inlet -3 -1 -2 -7 -7 -10 -15 -23 BPH 1000 outlet 1 2 -4 -4 -5 -7 -14 -19 37 static pressure psf [Pa]