AJR Filtration, part of the AJR Group family of companies, has been proudly manufacturing in the USA since 1997. We have grown to become a leading US-based manufacturer of high quality engineered liquid and dust filtration products made in the USA. Our 140,000 square foot facility located in West Chicago, Illinois is centrally located for distribution routes serving the United States and Canada. At AJR Filtration, we take personal pride in our superior customer service and comprehensive technical support. Our goal is to achieve a “Most Valued Supplier” status with every customer.