Content High-Capacity Stand-Alone Air Filtration Self-contained systems that offer flexibility, maximum filtration and high airflow. CleanZone SL The CleanZone SL is the world’s quietest high-performance air purifier. It's ideal to clean the air in large offices and spaces, health-care facilities and classrooms. Learn More CleanZone 5000 Two distinct models provide the highest possible air cleaning capacity for large indoor environments. Each model addresses a specific need. Learn More SWISSAIR® SolventMaster™ SWISSAIR SolventMaster air purifiers are high-performance vapor filtration systems specially developed for direct connection to the exhaust ducts of solvent printers. Due to the compact footprint they allow maximum removal of VOCs, while taking up minimal floor space.