Retail packed Ultra compact design makes it extremely portable Weighs only 3.3 lbs Powerful piston pump is efficient dependable and quiet Maximum pressure: 35 psi Liter flow: 5-6 liters/minute 5 Year Limited Warranty Comes complete with 1 NEBKIT 500 packed in box ELECTRICAL REQUIREMENTS: 120Vac 6OHZ PARTICLE SIZE: Less Than 5 Microns MAXIMUM PRESSURE: 30-35 PSI OPERATING PRESSURE: 16 PSI UNIT DIMENSIONS 5.5 x 7.4 x 4 WEIGHT 3.3 Lbs OPERATION HUMIDITY AND TEMPERATURE RANGE 50øF-104øF 30%-95%RH STORAGE HUMIDITY AND TEMPERATURE RANGE 13øF-140øF 30%-95%RH