The Alen BreatheSmart FLEX: Stylish, Powerful Air Purification for Medium to Large Spaces The Alen BreatheSmart FLEX offers effective air purification for rooms up to 700 sq ft every 30 minutes (1,400 sq ft per hour) on high, making it ideal for bedrooms, living rooms, and offices. With a sleek design and customizable panels, the FLEX blends style with functionality to fit seamlessly into your home. The Alen T500 Tower Purifier: Compact, Powerful Air Cleaning for Any Room The T500 delivers impressive True HEPA (H13) purifying power in a space-saving design. Quieter than comparable tower units, the T500 cleans up to 500 sqft of air every one hour. Alen's medical-grade filtration efficiently captures up to 99.9% of dust, allergens, and pollutants particles down to 0.1 micron Here’s why it’s a top choice for smaller to medium-sized rooms: