Modular air filtration housing and system

A filter assembly comprising:

• a filter support frame comprising:
• a plurality of air filter receptacle shelves configured to support a plurality of air filter boxes;
• a ridge extending vertically along at least a portion of an exterior of the filter support frame;
• a clamp disposed on the exterior of the filter support frame proximate to the ridge;
• a tray receptacle;
• an inlet configured to receive a mixture of air and particulates and channel the mixture of air and particulates toward the plurality of air filter boxes;
• and
• an outlet configured to receive filtered air from the plurality of air filter boxes and channel the filtered air out of the filter support frame;
• a removable tray configured to collect particulates;
• and
• a removable plenum, the removable plenum being configured to direct the mixture of air and particulates from the inlet toward the plurality of air filter boxes, the inlet being defined at least in part by the tray receptacle and the removable plenum when installed with the filter support frame;
• wherein the filter support frame is configured to channel the mixture of air and particulates through the plurality of air filter boxes simultaneously,
• wherein the ridge is configured to abut against an edge of the removable plenum when the removable plenum is installed with the filter support frame, and
• wherein the clamp is configured to clamp the removable plenum against at least a portion of the exterior of the filter support frame to couple the removable plenum to the filter support frame
• wherein the ridge is spaced a distance away from an inlet end of the filter support frame such that at least a portion of the removable plenum overlaps the exterior of the filter support frame when the removable plenum is installed with the filter support frame and abutting the ridge.