The Frigidaire Ultra Anti-Allergen 220 is a powerful and effective tower air purifier that combines 4 stages of anti-allergen filtration with its 4 different fan speed settings. The various settings allow this model to be an effective purifier for larger-sized rooms and offices. Additionally, its slim tower construction make it easy to store and position anywhere that you need it. This air purifier is CADR rated for various pollutants: smoke, dust and pollen. This model is AHAM certified, which means it has an excellent delivery rate of clean air. Some notable user-friendly features of this air purifier are its automatic safety shut-off and programmable timer. Both of these features ensure that the purifier runs properly and at peak performance. Additionally, this model has digital display and soft button controls on the top of the unit for easy operation and adjustment. The noise output of this air purifier is also relatively low, even on the higher power settings. Ultimately, this air purifier will discretely do an excellent job filtering the air in even large rooms. Please call (866) 972-8227 for more information or to place an order.