dwg AVX-1807 · Products
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A filter mat consists of knitted or woven wire mesh, synthetic nonwoven media or a combination of these. It is cut to fit the filter housing. In a layered mat, a coarse layer takes the dust load. Finer media provides separation and a support layer holds the pack in shape. Pressure drop can rise as the mat becomes dirty. The medium and operating conditions determine when cleaning or replacement is needed.
Also known as: filter media mat · pre-filter mat · filter pad · grease filter mesh · coalescing mat · cut-to-size filter media
If a filter mat does not fit its frame, air or liquid can bypass the medium. A low measured pressure drop then says little about filtration. When contamination appears downstream, also check the installed mat dimensions, thickness and filter class.
We supply filter mats cut to size in wire mesh or synthetic media. They are available as a single layer or a built-up pack. Send the frame dimensions, flow rate, required filter class and the contaminants to be retained. A housing drawing or an existing mat helps determine the construction.
Metal mesh mats can usually be cleaned and refitted. Applications include extract hoods, oil-mist separation and hot gas streams. Synthetic mats generally cost less per piece and are replaced at the specified interval. We supply both loose or in a frame with suitable handles and clips.
| Property | Value |
|---|---|
| 5–50 mm (standard range) | |
| typically 1–4 layers: coarse pre-filter layer, fine media, support layer | |
| knitted or woven wire mesh, synthetic nonwoven, or a combination | |
| typically ISO 16890 ISO Coarse to ISO ePM10; legacy EN 779 G2–M6 | |
| stainless to approx. 400 °C; aluminium and galvanised steel to approx. 200 °C; synthetic to approx. 100 °C | |
| +3 / −0 mm on cut dimensions — never supplied undersize; tighter on request | |
| cut sheets typically to approx. 1000 × 2000 mm, or roll goods; available widths depend on the medium | |
| loose cut sheet, or framed in stainless, galvanised steel, aluminium or board | |
| metal mats washable and reusable; synthetic mats replaced at interval |
The values shown are standard industry ranges, not a commitment. Media type, layer construction, thickness, filter class, frame and dimensions are confirmed per application after technical review of the process data.
Provide the clear opening, rebate depth and fastening method. Measure the housing even when an old mat is available. The mat needs a close fit to prevent bypass. Cutting dimensions and any allowance are matched to the way it is retained.
ISO 16890 replaced EN 779 for general ventilation. Existing filters may still carry labels such as G4 or M5. Send the current filter class and test standard. Available test data is needed to assess performance under different standards.
The layer construction is matched to the contamination and separation required. A coarse layer can take the dust load. Finer media provides separation and a support layer holds the pack in shape. State what must be retained and the pressure drop at installation and replacement.
State the replacement interval, cleaning method and operating temperature. Metal mesh mats can often be cleaned. Synthetic mats are generally replaced. The choice depends on the process and the cost of use and maintenance.
Metal mats are available in stainless 304 and 316L, galvanised steel and aluminium. Synthetic mats are supplied in polyester (PES) and polypropylene (PP), including progressive layer constructions. Higher alloys such as Duplex, Inconel and Monel are possible for corrosive or hot gas duty. Availability and lead time are confirmed at quotation. Frames, retaining mesh and clips are matched to the medium and specification.
A filter mat is the loose filter medium. A filter panel has the medium mounted in a frame, sometimes with retaining mesh. We supply both. The housing and fastening method determine which form fits.
For general ventilation, EN ISO 16890 succeeded EN 779:2012, which was withdrawn in 2018. Its groups include ISO Coarse, ePM10, ePM2,5 and ePM1. Existing filters may still carry G, M and F labels. The standards measure different properties and have no official direct conversion. Send the current label and any available test data.
Metal mesh mats can usually be degreased or backflushed, dried and refitted. Check that the cleaning method suits the material and contamination. Synthetic mats are generally replaced. Cleaning can change their structure, so the original filter class may no longer be supported.
Yes. We supply loose mats for housings with their own retaining system and mats in stainless steel, galvanised steel, aluminium or board frames. Handles and clips can be matched to the housing. Send the frame type and dimensions so the fit can be assessed.
The required thickness depends on dust loading, layer construction and available space. A thicker mat can hold more dust and extend the replacement interval. Filter class also depends on the medium. Greater thickness alone does not establish a finer class.
The mats described here are intended for pre-filtration. They take the coarser load before a fine filter or cartridge. Sub-micron separation requires assessment of the complete filter arrangement. Any sub-micron rating is confirmed per application using process data.
Send the frame or rebate dimensions, thickness, filter class and test standard. Include the medium, temperature and air or liquid flow rate. State whether a frame is required and provide the quantity and replacement interval. A photograph of the housing with the existing mat helps with the review.
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