The SR 221 pre-filter is a high-performance disc designed to trap larger airborne particles before they reach the main filter. By capturing coarse dust and debris at an early stage, it helps significantly extend the service life of compatible filters such as the SR 510 P3 R, SR 710 P3 R, SR 299-2 ABEK1-Hg-P3 R, and SR 599 A1BE2K1-Hg-P3 R.
Easy to install, the pre-filter fits securely into a dedicated holder, which is then snapped onto the particle or combined filter. This simple yet effective addition not only improves filtration efficiency but also reduces maintenance frequency, making it a practical choice for demanding work environments.
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