Filter Bag like SPÄNEX 2500 mm D=200 mm, Filter Felt BIA/IFA "M", Rod Suspension, NEW, Part No. 100200250014

More material where it counts. Our filter felt weighs 470 grams per square meter and is 1.4 millimeters thick. That is considerably more than many low-cost replacement filters. You can feel it right away: the felt is firm and dense rather than thin and papery.

With rod suspension, the top loop carries the full weight of the bag including the dust cake, and it gets jerked with every cleaning cycle. At 2.5 m length that adds up – exactly where lightweight felts tear out over time. The measured tensile strength of our felt is over 1,400 N per 5 cm lengthwise – mathematically equivalent to a pull of about 140 kg on a hand-wide strip.

The longitudinal seam is also built for continuous duty: welded or triple-stitched with polyester thread.

This bag is made for SPÄNEX dust collectors with rod suspension: the top loop hangs over the filter rod, and the bottom hem is fastened with a standard hose clamp or wire clamp. No snap ring is used. Three dimensions determine the fit:

• Diameter – nominal 200 mm, manufactured at 204 mm
• Overall length – here 2,560 mm (effective length 2,500 mm)
• Flat width – lay the bag flat and measure across: here 320 mm inside, 325 mm outside

Why 204 instead of 200 mm? On your system you measure 200 mm – that is the standard size. This bag is not clipped into a cell plate with a snap ring but pulled over a spigot. That is why it is made 4 mm wider, so it slides on cleanly and the hose clamp seals tightly.

Hose clamps are not included. We make other lengths, diameters or grades on request.

Filter media of dust class "M" are approved for hazardous dusts, which include wood dust. The test verifies that less than 0.1 % of the dust passes through the filter. The IFA certificate for this media is valid until 09/24/2027.

BIA or IFA – both mean the same thing. Many people still know the dust class as "BIA 'M'". The testing institute used to be called BIA (Berufsgenossenschaftliches Institut für Arbeitssicherheit), became BGIA in 2003 and today is the IFA – Institute for Occupational Safety and Health of the German Social Accident Insurance (DGUV). Current test certificates therefore carry the IFA name; "BIA 'M'" and "IFA 'M'" refer to the same dust class. Explained in detail in our article: BIA "M", IFA "M", dust class M →

The calendered surface is slightly compacted and smoothed. As a result, the dust cake builds up mainly on the surface instead of migrating into the fibers – cleaning is easier, differential pressure stays lower and the fan uses less power.

Important: This media is not antistatic. If your system requires an antistatic version, we make it on request – please contact us before ordering.