An evaporative air cooling tower , comprising: a housing defining an interior of the evaporative air cooling tower ; a grill coupled to the housing and defining openings ; a tank positioned adjacent to a bottom portion of the housing , wherein the tank is configured to receive and store liquid; a tray positioned adjacent to a top portion of the housing , wherein the tray is configured to receive and release the liquid; a hose in fluid communication with the tank and the tray ; a pump configured to pump the liquid from the tank to the tray through the hose ; a filter structure comprising filters configured to receive the liquid from the tray and to absorb or store the liquid; wherein the filter structure comprises a filter frame comprising a bottom wall , two side walls and a top wall ; wherein the filters are configured to couple to and/or be secured by the bottom wall and the top wall ; and a fan configured to draw air into the interior, wherein the air is cooled by the filters and directed out of the interior through the openings; wherein the filter structure further comprises filter holders configured to receive and secure the filters ; wherein the filter holders are positioned between two sides of the filter structure , characterized in that the filter holders define slits for receiving the filters , the slits being positioned between 5-85 degrees relative to at least one of the two sides; in that the filters are positioned substantially parallel to each other and define air gaps; and in that the air gaps are configured to allow for air to flow through the filter structure , contact the filters to cool air, and exit the interior . a housing defining an interior of the evaporative air cooling tower ; a grill coupled to the housing and defining openings ; a tank positioned adjacent to a bottom portion of the housing , wherein the tank is configured to receive and store liquid; a tray positioned adjacent to a top portion of the housing , wherein the tray is configured to receive and release the liquid; a hose in fluid communication with the tank and the tray ; a pump configured to pump the liquid from the tank to the tray through the hose ; a filter structure comprising filters configured to receive the liquid from the tray and to absorb or store the liquid; wherein the filter structure comprises a filter frame comprising a bottom wall , two side walls and a top wall ; wherein the filters are configured to couple to and/or be secured by the bottom wall and the top wall ; and a fan configured to draw air into the interior, wherein the air is cooled by the filters and directed out of the interior through the openings; wherein the filter structure further comprises filter holders configured to receive and secure the filters ; wherein the filter holders are positioned between two sides of the filter structure , characterized in that the filter holders define slits for receiving the filters , the slits being positioned between 5-85 degrees relative to at least one of the two sides; in that the filters are positioned substantially parallel to each other and define air gaps; and in that the air gaps are configured to allow for air to flow through the filter structure , contact the filters to cool air, and exit the interior . <EOS>