Xpower Negative Air Machines,Blue,21 5/8 In H X-3580

4-Stage Filtration System Including Activated Carbon Filter For Effective Odor Control And Hepa Filter That Can Remove 99.97% Of 0.3-Micron Sized Particulates Lightweight Compact And Durable Abs Plastic (The Same That Football Helmets Use) Housing Design Powerful And Energy Efficient 1/2 Hp External Rotor Induction Motor Low 2.8 Amps Draw With 600 Cfm Airflow 5 Speed Control Switch Filter Change Lamp Indicator & Stackable Up To 5 Units High For Easy Storage Etl / Cetl Safeguard Certified Dual Thermal Protection & 1 Year Manufacturer Warranty Product Dimensions:19.6 X 12.3 X 21.6 Inches Item Weight:32.8 Pounds Shipping Weight:36.2 Pounds Manufacturer:Xpower Manufacture Inc.