Anthony Querciagrossa

Columbus Industries, Inc. operates as an air filter supplier. It provides HVAC, OEM, and paint products. The firm also offer applications such as air purifiers, commercial/industrial HVAC, evaporative cooling, expanded metal, humidification, odor/VOC control filters, pet filter, range/cooler hood filter, spray booth, vacuum cleaners, water purification, and whole house air cleaners. The company was founded in 1965 and is headquartered in Ashville, OH.

Purafil, Inc. provides gas phase air filtration systems and engineered solutions designed to protect people, processes, and environments. The company was founded in 1969 and is headquartered in Doraville, GA.

Filtration Group Corp. engages in manufacture of air purification and filtration products. It offers GeoPleat, Filtrair, and HEPA filters which are used in hospitals, electronics, nuclear, pharmaceuticals, laboratories, aerospace, food processing, optics, and industrial applications. The company was founded by George C. Nolen in 1942 and is headquartered in Austin, TX.

Medline Industries, Inc. engages in the manufacture and distribution of healthcare supplies. Its products include advanced wound care, apparel, diagnostics, gloves, nutrition, office supplies, respiratory, and vascular access. The firm also offer quality management, reducing readmissions, staff management, capital planning and services, and institute for healthcare excellence business solutions. The company was founded by A. J. Mills in 1910 and is headquartered in Mundelein, IL.