Filters Unlimited has been operating since 1979 in MD, NJ, PA, & Delaware areas. We have continued to meet the needs throughout the area due to our extensive knowledge and line of products. Many air filters are composed of organic materials and are not the best in the industry. Often times these filters corrode due to high-temperatures or lubricating oils with acids, which after extended use results in weak spots. Do not waste your money on these filters again. Find the best industrial and commercial air filters at Filters Unlimited. Our company offers wholesale air filtration products and maintenance for all commercial and industrial systems such as office buildings, schools, hospitals and clean rooms.