Baghouse Filter Cages for Reliable Dust Collection

Filter cages are essential to maintaining efficient dust collection and filtration performance. They support the filter bags, keeping them open so air can pass evenly through the fabric for proper cleaning and dust release. A well-designed cage prevents bag abrasion, extends service life, and helps maintain system airflow and compliance.

IAC provides high-quality replacement filter cages for all baghouse types and brands. Available in multiple materials and configurations, our cages are engineered for durability and compatibility with pulse-jet, reverse air, and shaker-style systems. Whether you are replacing worn components or upgrading for improved performance, IAC provides precision-built cages that help your dust collection system operate at its best.

IAC's Field Service Team replacing baghouse filter cages for dust collector system.

Baghouse Filter Cage Configurations

AC supplies a wide range of baghouse dust collector filter cage configurations. Common wire cage constructions consist of 10, 12, or 20 vertical wire stringers. Standard horizontal ring spacings are 4”, 6” or 8”.

If plenum height restrictions are a problem, two-piece filter cages are available.

Baghouse filter cage wire gauge and stringer configuration reference chart

The number of vertical wire stringers used in filter cage construction depends on the applicable requirements and fabric media used for the filter bag. Baghouse filter cages with 10 wire stringers are usually used on heavier weight felts, while 12 wire stringers are usually used on lighter to medium weight felts. Filter cages with 20 wire stringers are usually used on fiberglass fabric filters and other media that require maximum support, thereby reducing the excessive flexing of the fabric yarns that usually causes premature bag failure.

The strongest filter cages for pulse-jet baghouses are known as a “rigid wire” cage. A rigid wire filter cage is designed to provide uniform support to the overall length of the fabric filter, utilizing stringer wires that are equally spaced around the circumference of the filter cage and welded to support rings that are spaced along the length of the filter cage.
Special filter cage tops, such as roll band and roll flange styles, are also welded to the stringer wires; thereby developing a strong internal assembly from which to attach the filter cage and filter bag to the baghouse tubesheet. The filter cage bottom is either interlocked to a stringer ring or welded to the stringers. Either method is equally sufficient for support.

Specialty Filter Cage Wire and Coatings

Where moisture or chemical conditions create an environment that is corrosive to metal, 10, 12, and 20 wire filter cages can be produced from stainless steel or carbon steel with a variety of available coatings. Coatings such as epoxy are commonly used for corrosive environments. Special paints or electro-processed finishes such as electro galvanizing are also available to guard against corrosion.

Each filter cage, regardless of design, is produced consistently to specification. Diameter, overall length, and other close tolerances are held uniformly due to exclusive automated and state-of-the-art production equipment. Production runs are continually destruction-tested to monitor and maintain construction integrity.

Filter Cage Tops, Bottoms, and Venturi

Top load bag filter cages are available with a T-flange, ring top, or several styles of rolled flange tops. Cage diameters range from 4” to 6 1/8”. Common wire thickness ranges are 9 gauge, 10 gauge, and 11 gauge.

Bottom load bag filter cages are constructed with a split collar or split ring top. Common cage diameters range from 4” to 6 1/8”. Wire thickness ranges are 9 gauge, 10 gauge and 11 gauge.

For more efficient cleaning, venturis are available for all diameter filter cages. Venturis come in 3” to 6” lengths. Venturis are made in a variety of materials; aluminum, carbon steel, galvanized and stainless steel.

If you have special filter cage requirements, call IAC. In most cases we can customize a cage to fulfill your needs.

Request a Quote or Technical Support

Selecting the right filter cage is essential to maintaining proper bag performance, airflow, and long-term system reliability. If you need help confirming dimensions, wire configurations, materials, or compatibility with your existing baghouse, IAC’s parts specialists are ready to assist. We supply high-quality replacement cages engineered for pulse jet and reverse air systems used across cement, steel, mining, grain, wood processing, and other demanding operations.

Whether you are replacing worn cages, upgrading to a more durable design, or troubleshooting premature bag wear, our team can recommend the correct solution and provide fast turnaround from our large inventory. Request a quote or reach out for technical support, and we will help ensure your dust collector operates safely and efficiently.

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