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Product Name	F7/F9 Bag Filter for Livestock Air Filtration Systems
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Product Overview	The F7/F9 Bag Filter for Livestock Air Filtration Systems is a multi-pocket high-efficiency air filter developed for fresh-air intake and mechanical ventilation systems in commercial pig houses, poultry houses, breeding farms and other intensive livestock facilities. Its deep-pocket structure provides a large effective filtration area while maintaining a compact frontal size. The filter is designed to capture fine airborne dust and particulate contamination before supply air enters the livestock building, helping improve incoming-air cleanliness and supporting farm environmental control and biosecurity management. F7 and F9 configurations can be selected according to the required filtration strategy. Filter dimensions, pocket depth, pocket quantity, frame construction and media specification can be customized according to ventilation airflow, filter-wall layout and project requirements.
Key Features	Multi-pocket structure provides a large filtration surface within a compact filter frame. Available in F7 and F9 filtration configurations for different livestock-house air quality requirements. Optimized pocket geometry supports even airflow distribution across the filter media. Low-pressure-drop design helps maintain efficient operation of livestock ventilation fans. High dust-holding capacity is suitable for continuous fresh-air filtration applications. Rigid header frame supports stable installation in filter walls, air-handling sections and ventilation housings. Multiple pocket depths and frame dimensions can be supplied according to project requirements. Suitable for multi-stage filtration systems together with coarse or medium-efficiency pre-filters. Designed for commercial pig farms, poultry farms, breeding facilities and livestock building projects.
Structural Components	Header Frame: Provides mechanical support and a stable mounting interface for filter housings and modular filter walls. Filter Pockets: Multiple deep filter bags increase the total filtration area and distribute airflow throughout the media. Fine Filter Media: Glass fiber, synthetic fiber or suitable filtration media can be selected according to the required efficiency and operating environment. Pocket Separators: Help maintain pocket geometry and reduce unnecessary contact between adjacent media surfaces. Sealing Interface: Gaskets or sealing materials can be provided to help minimize unfiltered air bypass. Reinforced Pocket Construction: Supports stable performance during continuous airflow operation in livestock ventilation systems.
Working Principle / Structural Principle	Fresh outdoor air enters the filter through the front header frame and is distributed into multiple deep filter pockets. The pocket arrangement increases the effective media surface area, reducing the airflow velocity through individual sections of the filtration material. As air passes through the media, airborne particulate matter is retained within and on the filter fibers while filtered air continues toward the livestock-house ventilation plenum, ductwork or animal area. The extended media area helps balance filtration efficiency, airflow resistance and dust-holding capacity. In high-dust farm environments, installing a suitable pre-filter upstream can reduce the loading of coarse particles on the F7/F9 stage and help extend service intervals.
Technical Specifications	Product Type Multi-Pocket / Bag Air Filter Available Filter Grade F7 / F9 ISO 16890 Classification According to selected filter media and project requirements Filter Media Glass fiber, synthetic fiber or other suitable media available upon request Frame Material Galvanized steel, molded plastic or customized construction according to project requirements Pocket Configuration Multiple-pocket configuration; customizable Pocket Depth Available in different depths according to installation space and airflow requirements Filter Dimensions Standard and customized sizes available Rated Airflow According to filter dimensions, pocket design and project ventilation requirements Initial Pressure Drop Depends on filtration grade, media, dimensions and airflow rate Gasket Available upon request Installation Front-access or side-access filter housing according to system design Operating Conditions Designed according to local climate and farm conditions
Applications	Commercial pig houses and swine production buildings Breeding, multiplier and high-biosecurity pig farms Poultry houses and commercial poultry production facilities Livestock-house fresh-air intake filtration systems Positive-pressure livestock ventilation systems Centralized filter walls and air filtration rooms Air-handling units serving agricultural buildings Livestock farm renovation and ventilation upgrade projects New pig farm construction and steel structure livestock buildings
Customization Options	SHEWUYOU can configure the bag filter according to livestock-house ventilation calculations, air inlet dimensions, filter-wall layout and required filtration efficiency. Customization options may include filter grade, filter media, frame material, frame dimensions, pocket depth, number of pockets, gasket configuration and installation interface. Special configurations are available for new construction, renovation and complete livestock ventilation projects. Selection can also be coordinated with pre-filters, filter housings, ventilation fans, air ducts and positive-pressure air supply systems according to project requirements.
Installation & Maintenance	Install the bag filter in a properly sized filter frame or air-handling housing with the pockets extending in the direction of airflow. The perimeter of the filter should be correctly sealed to reduce air bypass around the frame. During installation, ensure that filter pockets are fully extended and are not compressed, twisted or obstructed by nearby structural components. Sufficient downstream space should be provided for proper pocket expansion under operating airflow. Routine inspection should include checking filter loading, frame condition, sealing surfaces and ventilation pressure. Differential-pressure monitoring is recommended for larger commercial installations. Replacement intervals should be determined according to dust concentration, ventilation rate, filter resistance and farm operating conditions. If a pre-filter is installed, it should also be inspected and maintained regularly to protect the F7/F9 bag-filter stage.
Project Cases	Typical livestock applications include multi-stage filter walls for breeding pig houses, centralized fresh-air filtration rooms for commercial swine farms, and modular air intake systems for poultry production facilities. A typical system may combine a coarse pre-filter with an F7 or F9 bag filter to progressively remove airborne particulate matter before the supply air enters the animal building. The final configuration is selected according to farm biosecurity requirements, outdoor air quality, fan capacity, total ventilation volume and available installation space. Filter quantity, dimensions and airflow capacity are designed according to individual project requirements.
Product FAQ	Q: What is the difference between F7 and F9 bag filters? A: F9 is a higher legacy EN 779 filtration class than F7 and is normally selected where finer particulate removal is required. The appropriate ISO 16890 classification should be confirmed according to the actual filter media and project specification. Q: Which grade should be used for a pig farm? A: Selection depends on outdoor particulate concentration, farm biosecurity requirements, ventilation design and the required incoming-air quality. F7 or F9 can be selected as part of a multi-stage filtration system according to project requirements. Q: Should a pre-filter be installed before the bag filter? A: A pre-filter is recommended for many livestock applications with high outdoor dust loads. It can capture larger particles before they reach the higher-efficiency bag filter and may help extend the service life of the final filtration stage. Q: Can the filter size be customized? A: Yes. Filter width, height, pocket depth and pocket quantity can be customized to match existing filter housings or new ventilation projects. Q: Can these filters be installed in a centralized filter wall? A: Yes. Bag filters can be installed in modular filter walls, air-handling housings and centralized fresh-air filtration rooms when the supporting frame and sealing system are correctly designed. Q: How often should the bag filter be replaced? A: Replacement frequency depends on dust loading, airflow, pre-filter performance and allowable pressure drop. Routine inspection and differential-pressure monitoring are recommended instead of relying only on a fixed replacement interval. Q: Can SHEWUYOU supply a complete livestock air-filtration solution? A: Yes. Filter stages, holding frames, housings, ventilation equipment and related components can be configured according to project requirements.
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