Baghouse filter cages provide support to your filter bags, and can affect your baghouse’s efficiency. If filter bags are not fitted to the wire cage properly, or wire cages are not replaced when they become rough or rusty, the efficiency of your baghouse dust collection system will be reduced. Regular preventive maintenance keeps filters running efficiently and saves major baghouse repairs in the future.

Baghouse Cages, dust collector cages
IAC-INTL Parts - Baghouse Cages

Filter Cage Configurations

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

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

The number of vertical wire stringers used in cage construction depends on the applicable requirements and fabric 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 bag cage for pulse-jet baghouses is known as the “rigid wire” cage. It 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 cage and welded to support rings that are spaced along the length of the cage. 

Special 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 cage and filter bag to the baghouse tubesheet. The cage bottom is either interlocked to a stringer ring or welded to the stringers. Either method is equally sufficient for support.

IAC also supplies oval cages, please call for details.

bag filter cage design, dust collector cages questions

Not sure which filter bag cage configuration your current baghouse dust collector application utilizes?

Download our Tech Spec Measurement PDF, fill it out as completely as possible, and submit it with your request for quote. 

Specialty Wire and Coatings

Where moisture or chemical conditions create an environment that is corrosive to metal, 10, 12, and 20 wire 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 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 bag cages and venturi, IAC-INTL Parts - Baghouse Cages

Filter Cage Tops, Bottoms, and Venturi

Top load 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 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 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 cage requirements call IAC. In most cases we can customize a cage to fulfill your needs.

bag filter cage design, filter bag cages and venturi, IAC-INTL Parts - Baghouse Cages
IAC-INTL Parts - Baghouse Cages


Contact us today with your questions about filter cages for baghouses and dust collectors, or get a quote on your filter cage needs.