Enviro Fresh Duct Cleaning offers a lifetime, electrostatic furnace filter. The self charging electrostatic filters include an antimicrobial filter element in a rolled form aluminum frame. No plastic or cardboard in this durable, reusable filter. 

The filters have either 82% or 94% arrestence.  Arrestence measures the filters ability to trap and hold dust particles.

One and two inch thick filters are available in all standard sizes and are also available in custom sizes.  A special flexible filter is available for motor homes and other applications requiring a thinner filter. The flexible filter has all the same benefits of the rigid frame filters.