Method of manufacturing fiberglass filtration media

A method of manufacturing fiberglass media comprising:

• providing glass into a melter coupled to a bushing plate configured to produce glass filament strands, wherein the bushing plate is oriented at a 5 to 7 degree angle relative to a line perpendicular to the length of a rotating drum, and further wherein the bushing plate comprises 298 to 425 orifices;
• traversing the melter above the rotating drum in a first direction along a substantial length of the rotating drum followed by an opposite second direction along the substantial length of the rotating drum to define a pass;
• depositing the glass filament strands onto the rotating drum;
• traversing the melter in one or more passes at a first speed;
• traversing the melter in one or more passes at a second speed;
• spraying binder onto the glass filament strands on the rotating drum to form a fiberglass mat;
• removing the fiberglass mat from the rotating drum;
• providing the fiberglass mat onto a let-off table comprising a conveyor;
• expanding the fiberglass mat to produce an expanded fiberglass mat comprising bundled filaments on an air entrance side of the expanded fiberglass mat that are wavy in three dimensions and progressively denser and less wavy bundles of filaments between the air entrance side and an air exit side of the expanded fiberglass mat;
• providing the expanded fiberglass mat through a roller apparatus comprising an upper roller and a lower roller;
• spraying liquid onto the expanded fiberglass mat at an entrance to a curing apparatus;
• and
• curing the expanded fiberglass mat in the curing apparatus.