Size:16 x 20 x 1  |  Style:2-Pack Smart Filter The Filtrete Allergen, Bacteria & Virus Smart Air Filter attracts and captures microscopic particles like bacteria, particles that can carry viruses, and large particles like mold spores and pollen. Its Bluetooth-enabled sensor pairs with the Filtrete Smart App to help track filter life and determine optimal time for replacement. With Amazon Dash Replenishment, your Filtrete Smart Air Filter can automatically place an order for new filters when it’s time for a replacement. Make sure this fits by entering your model number. The first-ever Bluetooth-enabled HVAC air filters for your home. Track the life of your filter based on air flow and usage – not just time. So you never have to worry about changing your filter too early or too late. Filtrete Smart Air filters detect changes in air pressure and use a proprietary 3M algorithm to calculate filter life by balancing optimal air flow for your system and particle capture efficiency for your home’s air. Enabled with Amazon Dash Replacement to make filter replacement easy. Sign up and save 15% on all Dash Replenishment automatic reorders. See outdoor air quality information for multiple locations. Access information reminding you of your specific filter type and size. Filtrete Smart App available on iOS and Android devices. Filtrete Brand continuously redefines cleaner, fresher air with the highest standards in air filtration with exclusive 3M technology. For residential use only.