Field Controls FlexFilter 46600404 Air Filter, 28 in L, 16 in W, 11 MERV, For: 2400, 2140 Aprilaire Filter Models

Introducing the patented FlexFilter™ from Field Controls. The ultra compact, easy-to-assemble media air cleaners that replace at least 25 of the most popular models. With seven high-efficiency MERV 11 models to choose from, stocking, storing, shipping and installing media air cleaners just got a whole lot easier.