The DuraMAX 4v is a rigid, extended surface air filter engineered to provide maximum performance and prolonged filter lifecycles, even in the most demanding environments.

Its durable and rugged construction makes it an excellent choice for filtration systems operating at high velocities or in variable air volume (VAV) applications. The all-plastic frame is lightweight, strong, and can be easily incinerated after use.

Low pressure drop reduces energy costs

The DuraMAX 4v delivers an unmatched combination of low pressure drop and high efficiency through its unique minipleat design. A standard 24 x 24 x 12 filter incorporates approximately 194 square feet of media, increasing surface area and reducing resistance to airflow, helping lower overall energy costs.

Extended filter life reduces maintenance

The increased media area provides exceptionally high dust holding capacity, significantly extending the service life of the filter. Longer service intervals reduce maintenance frequency and lower disposal costs.

Designed for modern filtration systems

To meet the diverse requirements of modern HVAC systems, DuraMAX filters are available in five ASHRAE efficiency levels (65, 75, 85, 95, and 98%). They are offered in standard sizes such as 24 x 24 x 12, 20 x 24 x 12, and 12 x 24 x 12, with options for single or double header configurations.