Pocket Filters or Pocket Bag Filters (Galvanized steel or aluminium frame) usually have 4, 6 or up to 8 pockets of micro glass or synthetic media.
Not rigid, they can collapse under low airflow so always best installed vertically.
Some pocket seams are ultrasonically sealed, as opposed to sewn. This prevents tearing and leakage.
There are many types for various flowrates and efficiencies.
Rigid Pocket Filters (High-loft synthetic media) stay rigid, do not collapse.
Plastic frames can stop possible corrosion.
They remove dust, fine particles and have very high-dust holding capacity.
Selection – Use non-shedding fibres that resist moisture and chemicals, so resistant to bacterial growth. PU frames ensure a leak-proof bonding of pockets to header and eliminate corrosion. Look for low pressure drop and high efficiency levels. Should stay self-supported & rigid in air stream, withstand humidity & turbulence.
Withstand extreme pressure, Totally combustible, Lightweight frame, High dust holding capacity, Unique self-supporting filter medium
Application: Fine filters HVAC, industrial
Gasket: Optional, continuous poured gasket
Filter class (EN779:2012): G4, M5, M6, F7
Maximum final pressure drop: 450 Pa
Maximum temperature: 70°C
Maximum relative humidity: 90%