The DRB FGT V-Bank Final Filter is our highest efficiency Final Filter available for Gas Turbine Applications (MERV 16 rating). The F9 Final Filter is 95% efficient down to 0.3 microns. It has a moisture resistant Wet-Laid Fiberglass media with Protections Grids on the air outlet side of the two external pleat packs. The FGT V-Bank Final Filter has an extremely low pressure drop and high dust holding capacity. The ABS Frame has a rigid construction and a 5° tilt for moisture drainage. The FGT V-Bank is available in F-7 and F-8 efficiencies (our most popular choice).