Hi-Flo bag filters maintain their particle capture efficency throuhout the filter's life in the HVAC system. Offering a low initial, and a low average pressure drop, the Hi-Flo is also an excellent choive where energy savings is a consideration.
A 5-Star ECI product, It is available in efficiences of MERV 9, MERV 11, MERV 13 and MERV 14.