Alen T500 Tower Air Purifier with HEPA-Pure Filter for Allergies and Dust (Black, 1-Pack) PURE AIR FOR LIFE: We understand things happen, which is why Alen offers the industrys first and only Lifetime Warranty YOU'LL RECEIVE: 1 T500 Air Purifier, 1 HEPA-Pure filter best for removing allergens, pet dander, and dust POWERFUL COVERAGE: T500 is perfect for bedrooms, offices, and other spaces up to 500 SqFt INNOVATIVE DESIGN: Packs full-size performance into a sleek, compact tower with 12 designer panel options to fit seamlessly into your home, no matter your style WHISPER QUIET: Provides a gentle and steady tone, so even when it's working its hardest, you just might forget it's there