DC Fan - 12, 24, 48V 280x89mm (11.0”x 3.50”) OD280 Series Frame Diecast Aluminum Impeller Glass Fiber reinforced thermoplastic. Connection Terminals or lead wires Motor Programmable microprocessor control Brushless DC, Locked rotor and polarity protected. Bearing System Dual ball Available Options: PWM Tachometer Alarm Thermistor Operating Temperature Ball Bearing -15C ~ +65C Life Expectancy Ball Bearing 85,000 hours (L10 at 35C) Weight: ~6.8 lbs. Storage Temperature -25 ~ +80C Dielectric Strength 1 minute at 500 VAC, max leakage < 500 MicroAmp m0 Speed (RPM) Airflow (CFM) Noise (dB) Volts DC Voltage Range Watts OD280-12HB 2550 1200 72 12 9 ~ 13.5 135 OD280-12LB 1800 780 48 12 9 ~ 13.5 Model Number OD280-12MB OD280-24HB OD280-24MB OD280-24LB OD280-48HB OD280-48MB OD280-48LB Knight Electronics, Inc. 10557 Metric Drive Dallas, Texas 75243 214-340-0265 2200 950 2550 1200 1800 780 2200 950 2550 1200 1800 780 2200 950 56 72 56 48 72 56 48 12 24 24 24 48 48 48 9 ~ 13.5 90 62 18 ~ 27 135 18 ~ 27 62 18 ~ 27 90 24 ~ 55 135 24 ~ 55 62 24 ~ 55 90 Max. Static Pressure (“H2O) 0.90 0.65 0.55 0.90 0.65 0.55 0.90 0.65 0.55 Orion Fans RoHS Compliant 91 Information and data is subject to change without prior notification.