Air Conditioning Filters
for general and custom ventilation
Air Conditioning Filters manufactured by BWF Envirotec, Poland stand for unsurpassed filtration performance. Filters are available for various filter classes as well as from different filter media and for various applications.
BWF Envirotec, Poland manufactures non-standard dimensions filters upon request according to drawings and specifications.
That way our customers are assured the best technical solution for their filter systems.
Product range of Air Conditioning Filters
- Pocket filters
- Filters for painting walls
- Hauben pocket filters
- High temperature filters HT
- Fine filters
- Roller filters
- Cassette filters
- Absolute filters
- Activated carbon filters
- Activated carbon
- Wedge filters
- Multi pockets
- Compact filters
- Glass pocket filters
- Metal grease filters
- Compact carbon filters
- Columbus filters
- Filter mats
- Filtering foam
- Filters with carbon mat
- Mounting frames
- Sludge bags
Pocket Filters
The most frequently used filtering element in ventilation systems
Filter pockets are produced in a metal or synthetic frame. The number of pockets depends on the technical aspects of ventilation systems. The raw materials used in the production process, filter medium and production technology guarantee proper filtration properties and feature a long service life (as desired by customers).
Standards
Pocket filters are manufactured to standards:
ISO 16890
PN EN 779:2012
Fire rating:
F1 wg DIN 53438
Materials
The arrangement of polyester or polypropylene fibres with a progressive structure guarantees a minimum ratio between filter efficiency and resistance.
Standard dimensions
Frame sizes in pocket filters are fully standardized. The most popular are:
- 592 x 592 mm
- 490 x 592 mm
- 287 x 592 mm
- 287 x 287 mm
Frame thickness:
- 20 mm, 25 mm
Pocket length:
- 200 mm, 300 mm, 360 mm, 500 mm, 600 mm
BWF Envirotec produces non-standard dimensions upon request or according to a sent format.
Construction
Pocket filters in metal frame
A filter frame made of galvanised sheet steel guarantees long-term corrosion resistance. Filtering pockets stitched with industrial sewing machines ensure a long-term bond. Mounted in the frame on steel wires glued to the frame with temperature resistant adhesive. Depending on the dimensions, the in-curved edge of the wire ensures proper adherence to the frame and prevents it from slipping off and coming unglued. The sides of pocket packages are stuck to the frame and sealed with technical foam which guarantees a proper sealing.
Pocket filters in plastic frames
The filter frame is made from black plastic. Pockets are joined together with a specially designed profile made from plastic using a pneumatic machine or sewing machines. Both of them provide suitable adhesion and fitting in the filter frame. The sides of pocket packages are stuck to the frame and sealed with technical foam, which guarantees proper sealing.
Cassette Filters
Commonly used filters for pre-treatment
Cassette filters are most frequently used as the first filtration level in air conditioning and ventilation units. Our technical potential enables us to produce filters using a minipleat filter medium (to increase filter surface) or lying flat. Depending on the dimensions of the filter, additional bars are installed. The unit is branded with a dimension label to help to identify the product properly.
Standards
Cassette filters are manufactured to standards:
ISO 16890
PN EN 779:2012
Fire rating:
F1 wg DIN 53438
Materials
Arrangement of polyester or polypropylene fibres with a progressive structure guarantees a minimum ratio between filter efficiency and resistance.
Standard dimensions
Frame made from galvanized sheet metal, plastic or cardboard:
592 x 592 mm
287 x 592 mm
625 x 500 mm
Frame thickness:
20 mm, 25 mm,
50 mm, 96 mm, 100 mm
BWF Envirotec manufactures non-standard dimensions upon request or according to drawings and specifications of our customers.
Construction
Cassette filters – media lying flat
A filter frame made of galvanised sheet steel guarantees long-term corrosion resistance. A filter medium is positioned between two meshes made from galvanized sheet steel.
Meshes enable stabilization and proper functioning of the filter medium. The frame is closed with a blind rivet.
Cassette filters – pleated material (z-line)
A filter frame made of galvanised sheet steel guarantees long-term corrosion resistance. The filter medium is pleated by machine on galvanised sheet steel mesh. The mesh enables stabilization and proper functioning of the filter medium. The frame is closed with a blind rivet and inductively welded.
Compact Filters
Used as fine filters or absolute filters depending on filter classification
Compact filters are characterized by the arrangement of individual elements in the shape of the letter V, which guarantees the desired airtight of the product, provides the required volume of filtration medium and increases the real active area of the filter.
Filtration class
M6, F7, F8, F9 acc. standards:
ISO 16890
PN EN 779:2012
H10, H11, H12, H13acc. standards:
EN 1822:2009
Materials
The filter medium is made from fibreglass, waterproof paper characterised by high efficiency, formed of micro-fibreglass warp and a mixture of synthetic fibres. Filters available in our offer fall within classes M6 – H13, therefore they can be used in clean rooms in which air purity requirements are high.
Filters are available in versions to operate in high temperatures (HT) or carbon fibre.
Frame dimensions and type
Plastic frame:
592 x 287 x 287 mm
592 x 592 x 287 mm
592 x 490 x 287 mm
Standard 4V – 4 humps
Optional 3V – 3 humps or 2V – 2 humps
Construction
Frame is injection moulded, made from polystyrene.
Filter Mat
Perfect for many industrial branches
Filter mats are an extremely universal solution in filtration area. Selected according to the test of air pollution and cut to expected size they ensure proper and even air distribution and filtration.
Standards
Filter classification:
- ISO 16890
- PN EN 779:2012
Fire rating:
- F1 wg DIN 53438
Materials
Arrangement of polyester or polypropylene fibres with a progressive structure, thermally or mechanically hardened, or by binding measures.
Dimensions
Available in rolls to exact specifications.
Paint-Stop Mat and Filter Paper
Basic elements for spray booths
The most frequently used filter mats used in spray booths are: ceiling mat M5, filter mat Paint-Stop and filter paper type labyrinth.
Material Paint-Stop mat
100 % glass fibre with a progressive structure with laminated discharge side. The material is silicone free and acetone resistant. A green colour is on the air outlet side.
Available dimensions
- Thickness: 1”, 2”, 3” or 4”
- Mat is available in rolls, the most popular widths are: 0.75 m; 1 m; 1.25 m; 1.5 m; 2 m. It is possible to cut it to any size.
Absolute Filters
Elements of the final filtration stage in ventilation systems
The classification of clean rooms and other controlled work environments is specified in demanding technical standards. Therefore the filters used there must meet the highest standards of performance and effectiveness.
Filtration class
H10, H11, H12, H13, H14, U15 acc. standards:
EN 1822:2009
Material
Waterproof paper is made from high efficiency fibreglass, formed of micro-fibreglass wrap and a mixture of synthetic fibres.
Standard dimensions
Frame dimensions (width x height):
305 x 305 mm
305 x 610 mm
457 x 457 mm
610 x 610 mm
Frame thickness:
68, 78, 150, 292 mm
Construction
Filter made from pleated materials is called minipleat. Depending on the type, it can be separated by an aluminium foil separator or cotton threads separator, or glue. Filter medium is placed in an MDF frame (wooden board), made from aluminium or galvanised sheet. Normally, from the front of the frame an elastic polyurethane seal is placed.