The SPT 2062-VOC is the replacement filter for the SPT AC-2062 VOC Air Cleaner with Ionizer. Effectively removes formaldehyde, toluene and VOC. Factory tested: VOC removal efficiency reaches 95%, under the following conditions: 1m3 test room; initial concentration: 1.9-2mg/m3; 4hrs testing. This comes in a set of 2. VOC (Formaldehyde)- Formaldehyde and other VOC's can be found in building materials, foam insulation, household products and fuel-burning appliances. They can prompt headaches, cause vomiting, rashes, asthma attacks and some are suspected to cause cancer.