Panasonic FV-FL0810VE1 Intelli-Balance 100 Optional Supply Air Replacement Filter MERV 8 Easy access panel allows for quick and easy product maintenance and filter checks. Intelli-Balance 100 has two filters that clean the exhaust and supply air before passing through the ERV core, extending the life of the core. Intelli-Balance 100 comes equipped with a MERV 8 filter that can easily be upgraded to a MERV 13.