CK 3030 Wide Area Vacuum If you are challenged with maintaining large carpeted areas, the 30 inch CK 3030 Clean-Air Carpetkeeper delivers the performance of three upright vacuums, increasing your vacuuming productivity up to 10,000 square feet per hour. High efficiency cleaning performance, multi-stage filtration, and a host of operator-friendly features make the CK3030 the perfect unit for malls, airports, hotels, convention centers, department stores, hospitals, and more