Introducing the 3M™ Vehicle Air Purifier Plus- an advanced four-layer filtration system that purifies the air in your car in minutes. Small enough to be installed virtually anywhere in your car (20.6cm x 17.6cm x 7.3cm), the purifier combines multiple proprietary filtration technologies from 3M to remove up to 99% of pollutants and airborne particles such as dirt, pollen, and smoke, which can be detrimental to the health of you and your loved ones.