The smallest, lightest, quietest and most energy efficient 5-liter concentrator ever produced by Invacare. Sleek, stylish, contemporary design. The high-performance Perfecto2 unit incorporates all of the best features of the market-leading Platinum XL concentrator, while significantly improving upon the key specifications. Also available with the SensO2 oxygen sensor (IRC5PO2). - 75% quieter than Platinum XL - 25% more energy efficient than Platinum XL - 17% lighter than Platinum XL - 33% smaller than Platinum XL - Sleek, stylish, contemporary design Power: 280 watts @ 3 LPM Sound Level: <43 dB Product Weight: 43 lbs Dimensions: 13"(W) x 23"(H) x 11.5"(D) Oxygen: Purity: 95.6% to 87% at all flow rates Maximum Outlet Pressure: 5 PSI (+/- 0.5 PSI) Operating Flow Rate: 0.5 - 5 LPM Filters: Compressor inlet, outlet HEPA, cabinet (gross particle) Electrical: 120 VAC (+/- 10%), 60 Hz Rated Current Input: 4.0 amps average @ 5 LPM Pressure: Relief mechanism: 35 PSI (+/- 3.5 PSI) Shipping Product Weight: 47 lbs Warranty: 3-year limited