The AllerAir AirTube Jr. Exec Air Purifier is the ultimate solution for clean and portable air. HEPA wrap to trap airborne particles like dust. It has 4 lbs impregnated, activated carbon filter specially designed to remove the widest range of airborne chemicals, gasses, odors, and volatile organic compounds (VOCs). It features 100 cfm, changes air every 30 minutes, and cleanable pre-filter for larger particles.The AirTubes are small, portable, affordable and ideal for general-purpose local filtration. As a company philosophy we generally recommend the larger units with more carbon, but for the budget-conscious these are well-built units with carbon that still offer more media than comparable models. The 360-degree air intake, variable speed dial, 4 to 10 lbs of carbon at 1 thick, HEPA for particle filtration, and a pre-filter make this an affordable carry-along option. Product Specifications- Dimensions: 16 (height) x 7 (diameter) - Shipping Weight: 14 lbs. - Filtration System: MAC-B Carbon, Micro-HEPA, Prodense Pre-Filter - Carbon Filter: 4 lbs MAC-B, 1 Depth - Rated CFM: 100 - Covered Area: 200 sq.ft. - Recommended For: Chemical sensitivity, Gas, Odors, VOCs - Filtration Type: HEPA - Used In: Bedrooms or Nurseries - Filter Configuration: (1) MAC-B carbon filter, (1) Micro HEPA filter, (1) Prodense Pre-filter Placement Floor - Portability: No wheels - Pollutant Filtration: Dust - Warranty: 5 year manufacturer's limited warranty on parts and labor