Patent ID: 8827780

Claim:
An air handling system for filtering air in a building, said air handling system comprising: a support grid extending along a ceiling of the building and spaced apart from the ceiling to form an air carrying plenum located between said support grid and the ceiling, said support grid configured to support overhead devices, said support grid comprising openings to a room of the building; fan filter units positioned in corresponding openings of said support grid, said fan filter units to draw air from the plenum and to discharge the air into the room of the building; a return air chase in fluid communication with at least one of said openings in said support grid and in fluid communication with the room and the plenum to return the air from the room to the plenum; and at least one fan coil block comprising a fan and a cooling device, said fan coil block supported by said support grid and positioned within at least one of said openings in said support grid at a discharge end of said return air chase, said fan coil block configured to cool the air returned to the plenum from the return air chase.