Air filter system with supporting and sealing grid

Claim 1

An air filter system comprising: A. a latticework supported from the ceiling of a room; B. said latticework formed by main filter support members and cross filter support members extending lengthwise and crosswise of said room to define a plurality of filter receiving openings; C. said main filter support members and cross filter support members each having walls defining a fluid tight channel which receives a fluid sealant; D. a filter element mounted in each filter receiving opening and having flanges extending downwardly into said fluid sealant; and wherein the improvement comprises: E. said main filter support members and cross filter support members each having a center wall and two side walls spaced from said center wall, said walls all extending upwardly from a bottom wall to define first and second adjacent fluid sealant retaining channel chambers; F. said center wall of each of said main filter support members being connected in fluid tight relation only to the center walls of said abutting cross filter support members; G. said side walls of said main filter support members being connected in fluid tight relation only to the side walls of abutting cross filter support members; and H. said center wall and side wall fluid tight connections creating a fluidally continuous, upwardly open individual channel chamber around the periphery of each individual filter receiving opening with each of said peripheral channel chambers being independent of and not in fluid communication with any of the other peripheral channel chambers thereby requiring that only each individual channel chamber be level when in an installed position and permitting withdrawal of any individual filter element and its associated flanges without disturbing the fluid sealant around the flanges of adjacent filter elements.