Filters of All Types & Sizes

Supply Unlimited, LLC dba Filters Unlimited, is a leading provider of industrial and commercial filtration solutions, proudly serving Wisconsin and the Midwest since 1972. We supply a comprehensive range of high-quality air, liquid, and specialty filters designed to meet the performance demands of HVAC systems, manufacturing operations, Heavy-Duty Equipment, healthcare facilities, and more.

With decades of industry experience, we offer more than just products—we provide filtration expertise. Whether you're managing air quality in a critical environment or sourcing custom filter sizes for legacy systems, our team delivers responsive service, technical precision, and cost-effective solutions tailored to your application.

From single-unit replacements to large-scale filter programs, Filters Unlimited is your reliable partner for clean air, system efficiency, and long-term operational success.

Our mission

At Filters Unlimited, we specialize in delivering high-performance filtration solutions engineered to meet the rigorous demands of industrial, commercial, and HVAC applications. Our mission is to provide precision-manufactured filters and filtration systems that ensure optimal air quality, equipment protection, and operational efficiency. With a commitment to technical excellence, responsive service, and industry expertise, we partner with our clients to develop tailored filtration strategies that reduce downtime, improve system longevity, and meet regulatory compliance. From custom filter fabrication to large-scale distribution, Filters Unlimited is your trusted filtration resource—where reliability meets innovation.