HSS-type bag filters represent the most recent flat bag filter product line. The filter design has been achieved in the course of the HCS-type filter product line development, taking into consideration specific properties essential for low and medium efficiency filters. Irrespective of the size or chamber layout (serial or twin), HSS filters are made of identical repetitive elements joined by screws. This design facilitates short production terms and especially beneficial price quality ratio for the offered product. The HSS filters incorporate an "online" filter fabric regeneration technology (during treated air flow through the filter fabric) with the use of compressed air. HSS filters’ filtration area may range from 74 to 1440 m2.