A 45W long-life high-torque motor, a versatile 8.7" x 8.7" x 14.2" size, a 7.48 lb weight, a 141CFM CADR and up to 1095 ft² of purification area. Every aspect of Core 300 is designated for a better purification effect.Humidity: < 85% RH. Standby Power: < 0.8W. Operating Conditions Temperature: 14°–104°F / -10°–40°C..Power Supply : AC 120V, 60Hz