The Allerair 5000 Exec UV is perfect for large family rooms, great rooms and open areas. Allerair 5000 Exec air purifiers clean accomodate rooms up to 1500 square feet. The added UV technology targets airborne bacteria and viruses. This air filter is perfect for households with young children and pets. The 5000 has eight more pounds of activated carbon than the 4000 model for a grand total of 18 pounds of odor and chemical absorbing media. Allerair's special blended Mac-B carbon combined with its high-grade HEPA filter and prefilter easily eliminate airborne particulates, allergens, and irritants of all kinds. Plus, as with all Allerair models, casters make the system easy to move from area to area. One system can clean the living room during the day and be rolled into the bedroom at night. A variety of colors including glossy white, pewter, sandstone, and black in textured finishes make it easy to match with any decor in the home or the office.