Powerful 4 Layer Filtration System 1.Nylon Pre-filter Filters out hair, pet dander, and large particles 2.Nano Silver Ions Inhibit bacterial growth to promote a healthier environment 3.H13 HEPA Filter Removes 99.97% of airborne particulates as small as 0.3 microns 4.Activated Carbon Filter Absorb formaldehyde and pollen, eliminate odors Specification for Toppin Comfy Air Bridge 2 Power Supply Adapter Input: 100-240V~50/60Hz 1.0A Adapter Output: 24V - 1.5A Rated Power 35 W CADR 260 m³/H Noise Level ≤50 dB Operating Temperature 0°C-40°C / 32°F-104°F Dimensions 209×216×368 mm / 8.2×8.5×14.5 in Weight 2.2 kg / 4.85 lb