Compound air filter and method of removal of contaminants

A method for an air filter to remove airborne contaminants from air within a building, comprising:

• forming a first media layer;
• arranging a substantially uniform distribution of pleats in the first media layer;
• applying embossed shapes to maintain a shape and a spacing of the pleats wherein the embossed shapes are aligned and disposed in a parallel direction with airflow such that adjacent pleats contact one another and each pleat includes a plurality of opposing embossed shapes protruding therefrom;
• coupling a second media layer to the first media layer, forming a compound filter medium wherein the first media layer and the second media layer includes embossed shapes disposed in a parallel direction with airflow and between adjacent pleats;
• adhering a woven, fibrous material to a down-stream side of the first media portion, with respect to the direction of airflow;
• incorporating one or more support layers into the filter medium to impart structural integrity to the air filter wherein the support layer has at least a wire mesh that is co-pleated and configured to provide reinforcing support;
• retaining at least one of the first media layer, the second media layer, and the one or more support layers within a support frame;
• coupling a wire mesh with the first media layer;
• and
• configuring the support frame to be received by a HVAC system.